ci: add a workflow to check code format.

.editorconfig

@@ -0,0 +1,86 @@
+
+[*]
+charset = utf-8
+end_of_line = lf
+trim_trailing_whitespace = false
+insert_final_newline = false
+indent_style = space
+indent_size = 4
+
+# Microsoft .NET properties
+csharp_new_line_before_members_in_object_initializers = false
+csharp_preferred_modifier_order = public, private, protected, internal, file, new, static, abstract, virtual, sealed, readonly, override, extern, unsafe, volatile, async, required:suggestion
+csharp_style_prefer_utf8_string_literals = true:suggestion
+csharp_style_var_elsewhere = true:suggestion
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:suggestion
+dotnet_naming_rule.enum_member_rule.import_to_resharper = True
+dotnet_naming_rule.enum_member_rule.resharper_description = Enum members
+dotnet_naming_rule.enum_member_rule.resharper_guid = 8b8504e3-f0be-4c14-9103-c732f2bddc15
+dotnet_naming_rule.enum_member_rule.resharper_style = AA_BB, AaBb
+dotnet_naming_rule.enum_member_rule.severity = warning
+dotnet_naming_rule.enum_member_rule.style = all_upper_style
+dotnet_naming_rule.enum_member_rule.symbols = enum_member_symbols
+dotnet_naming_rule.unity_serialized_field_rule.import_to_resharper = True
+dotnet_naming_rule.unity_serialized_field_rule.resharper_description = Unity serialized field
+dotnet_naming_rule.unity_serialized_field_rule.resharper_guid = 5f0fdb63-c892-4d2c-9324-15c80b22a7ef
+dotnet_naming_rule.unity_serialized_field_rule.severity = warning
+dotnet_naming_rule.unity_serialized_field_rule.style = lower_camel_case_style
+dotnet_naming_rule.unity_serialized_field_rule.symbols = unity_serialized_field_symbols
+dotnet_naming_style.all_upper_style.capitalization = all_upper
+dotnet_naming_style.all_upper_style.word_separator = _
+dotnet_naming_style.lower_camel_case_style.capitalization = camel_case
+dotnet_naming_symbols.enum_member_symbols.applicable_accessibilities = *
+dotnet_naming_symbols.enum_member_symbols.applicable_kinds = 
+dotnet_naming_symbols.enum_member_symbols.resharper_applicable_kinds = enum_member
+dotnet_naming_symbols.enum_member_symbols.resharper_required_modifiers = any
+dotnet_naming_symbols.unity_serialized_field_symbols.applicable_accessibilities = *
+dotnet_naming_symbols.unity_serialized_field_symbols.applicable_kinds = 
+dotnet_naming_symbols.unity_serialized_field_symbols.resharper_applicable_kinds = unity_serialised_field
+dotnet_naming_symbols.unity_serialized_field_symbols.resharper_required_modifiers = instance
+dotnet_style_parentheses_in_arithmetic_binary_operators = never_if_unnecessary:none
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:none
+dotnet_style_parentheses_in_relational_binary_operators = never_if_unnecessary:none
+dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
+dotnet_style_predefined_type_for_member_access = true:suggestion
+dotnet_style_qualification_for_event = false:suggestion
+dotnet_style_qualification_for_field = false:suggestion
+dotnet_style_qualification_for_method = false:suggestion
+dotnet_style_qualification_for_property = false:suggestion
+dotnet_style_require_accessibility_modifiers = for_non_interface_members:suggestion
+
+# ReSharper properties
+resharper_autodetect_indent_settings = true
+resharper_formatter_off_tag = @formatter:off
+resharper_formatter_on_tag = @formatter:on
+resharper_formatter_tags_enabled = true
+resharper_use_indent_from_vs = false
+
+# ReSharper inspection severities
+resharper_arrange_redundant_parentheses_highlighting = hint
+resharper_arrange_this_qualifier_highlighting = hint
+resharper_arrange_type_member_modifiers_highlighting = hint
+resharper_arrange_type_modifiers_highlighting = hint
+resharper_built_in_type_reference_style_for_member_access_highlighting = hint
+resharper_built_in_type_reference_style_highlighting = hint
+resharper_razor_assembly_not_resolved_highlighting = warning
+resharper_redundant_base_qualifier_highlighting = warning
+resharper_suggest_var_or_type_built_in_types_highlighting = hint
+resharper_suggest_var_or_type_elsewhere_highlighting = hint
+resharper_suggest_var_or_type_simple_types_highlighting = hint
+resharper_web_config_module_not_resolved_highlighting = warning
+resharper_web_config_type_not_resolved_highlighting = warning
+resharper_web_config_wrong_module_highlighting = warning
+
+[{*.har,*.jsb2,*.jsb3,*.json,*.jsonc,*.postman_collection,*.postman_collection.json,*.postman_environment,*.postman_environment.json,.babelrc,.eslintrc,.prettierrc,.stylelintrc,bowerrc,jest.config}]
+indent_style = space
+indent_size = 2
+
+[*.map]
+indent_style = space
+indent_size = 2
+
+[*.{appxmanifest,asax,ascx,aspx,axaml,build,c,c++,c++m,cc,ccm,cginc,compute,cp,cpp,cppm,cs,cshtml,cu,cuh,cxx,cxxm,dtd,fs,fsi,fsscript,fsx,fx,fxh,h,hh,hlsl,hlsli,hlslinc,hpp,hxx,inc,inl,ino,ipp,ixx,master,ml,mli,mpp,mq4,mq5,mqh,mxx,nuspec,paml,razor,resw,resx,shader,skin,tpp,usf,ush,uxml,vb,xaml,xamlx,xoml,xsd}]
+indent_style = space
+indent_size = 4
+tab_width = 4

.github/workflows/code_format.yml

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+name: .NET code format check
+
+on:
+    # Currently we don't trigger this workflow.
+    # It's only used to show how the format check should be used
+    # and may be enabled in the future.
+    push:
+        branches: [ "PLACEHOLDER" ]
+    pull_request:
+        branches: [ "PLACEHOLDER" ]
+
+jobs:
+    dotnet-format:
+
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v3
+            - name: Setup .NET
+              uses: actions/setup-dotnet@v3
+              with:
+                  dotnet-version: 8.0.x
+            - name: Restore dependencies
+              run: dotnet restore
+            - name: Format
+              run: dotnet format --verify-no-changes --verbosity diagnostic