[repos] lgprotocol: import shared protocol definitions

Add LGProtocol as a pinned submodule and consume its KVMFR protocol
definitions throughout the client, host, IDD, OBS, and profiler.

Keep Looking Glass framebuffer helpers local while removing duplicated
protocol headers and migrating users to KVMFR-scoped types.

client/include/interface/renderer.h

@@ -75,7 +75,7 @@ LG_RendererRotate;
 
 typedef struct LG_RendererFormat
 {
-  FrameType         type;         // frame type
+  KVMFRFrameType    type;         // frame type
   bool              hdr;          // if the frame is HDR or not
   bool              hdrPQ;        // if the HDR content is PQ mapped
   bool              hdrMetadata;  // if the HDR static metadata is valid
@@ -286,7 +286,7 @@ typedef struct LG_RendererOps
   /* optional display calibration update for hardware cursor composition
    * Context: cursorThread */
   void (*onMouseColorTransform)(LG_Renderer * renderer,
-      const LGColorTransform * transform);
+      const KVMFRColorTransform * transform);
 
   /* updates the cursor-specific SDR white level reported by IddCx
    * Context: cursorThread */
@@ -307,8 +307,8 @@ typedef struct LG_RendererOps
    * when that update is consumed. A non-NULL releaseFn transfers ownership to
    * the renderer on success and must be called exactly once when the imported
    * frame can no longer be sampled. Context: frameThread */
-  bool (*onFrame)(LG_Renderer * renderer, const FrameBuffer * frame, int dmaFD,
-      const FrameDamageRect * damage, int damageCount,
+  bool (*onFrame)(LG_Renderer * renderer, const KVMFRFrameBuffer * frame,
+      int dmaFD, const KVMFRFrameDamageRect * damage, int damageCount,
       LG_RendererFrameToken frameToken,
       LG_FrameReleaseFn releaseFn,
       void * releaseOpaque, uint64_t releaseHandle);