fix(board): Update PSRAM configuration for RAK3112 to fix PSRAM error

[DanielCao0]

fix : quad_psram: psram id read error: 0x00ffffff, psram chip not found or not supported, or wrong psram line mode arduino

Configuration updates for rakwireless_rak3112:

• Added a new psram_type property with the value opi to specify the type of PSRAM used.
• Introduced a memory_type property that dynamically combines build.boot and build.psram_type for better memory type management.
• Updated the menu.PSRAM.enabled description to "OPI PSRAM" for clarity.
• Add wisblock pin define

[github-actions]

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