[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/renderers/EGL/texture.c

@@ -160,8 +160,8 @@ bool egl_textureUpdateRect(EGL_Texture * this,
 }
 
 bool egl_textureUpdateFromFrame(EGL_Texture * this,
-    const FrameBuffer * frame, LG_RendererFrameToken frameToken,
-    const FrameDamageRect * damageRects, int damageRectsCount,
+    const KVMFRFrameBuffer * frame, LG_RendererFrameToken frameToken,
+    const KVMFRFrameDamageRect * damageRects, int damageRectsCount,
     uint64_t * waitTimeNs)
 {
   const struct EGL_TexUpdate update =
@@ -184,7 +184,7 @@ bool egl_textureUpdateFromFrame(EGL_Texture * this,
 }
 
 bool egl_textureUpdateFromDMA(EGL_Texture * this,
-    const FrameBuffer * frame, LG_RendererFrameToken frameToken,
+    const KVMFRFrameBuffer * frame, LG_RendererFrameToken frameToken,
     const int dmaFd, uint64_t * waitTimeNs, LG_FrameReleaseFn releaseFn,
     void * releaseOpaque, uint64_t releaseHandle)
 {