feat: implement literal expressions with binary serialization support

[HeartLinked]

Summary

Implements binary serialization and deserialization support for Literal values, enabling conversion between Literal objects and binary representations. Adds comprehensive formatting support for date, time, and timestamp types.

Changes

• Added Conversions utility class (src/iceberg/util/conversions.cc/h) with ToBytes() and FromBytes() methods for Literal binary serialization/deserialization
• Added literal formatting utilities (src/iceberg/util/literal_format.cc/h) for date, time, timestamp, and timestamptz formatting
• Implemented Literal serialization methods: Replaced placeholder implementations of Serialize() and Deserialize() with full functionality
• Enhanced Literal::ToString(): Added support for date, time, timestamp, and timestamptz types
• Added TypeId string conversion: Implemented ToString(TypeId) utility function for type name lookups
• Updated CMake configuration: Added new util source files to build system

Test Plan

• Comprehensive binary round-trip tests for all primitive types (boolean, int, long, float, double, string, binary)
• Serialization correctness tests verify exact byte representations match expected formats
• Date/time formatting tests ensure proper ISO 8601 compatible string output
• Modify existing test(e.g. manifest_reader_test.cc) to use binary serialization.

[zhjwpku]

LGTM

[HeartLinked]

@wgtmac I've handled these comments.

[Fokko]

Looks good @HeartLinked, thanks for working on this, and thanks @wgtmac @zhjwpku @mapleFU and @HuaHuaY for the review 🚀