[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/hdr_overlay.c

@@ -140,7 +140,7 @@ void egl_hdrOverlaySetState(EGL_HDROverlay * this, bool active, bool pq,
 }
 
 static int convertDamage(EGL_HDROverlay * this, const struct Rect * damage,
-    int damageCount, FrameDamageRect * output)
+    int damageCount, KVMFRFrameDamageRect * output)
 {
   int count = 0;
   for (int i = 0; i < damageCount; ++i)
@@ -152,7 +152,7 @@ static int convertDamage(EGL_HDROverlay * this, const struct Rect * damage,
     if (x2 <= x1 || y2 <= y1)
       continue;
 
-    output[count++] = (FrameDamageRect)
+    output[count++] = (KVMFRFrameDamageRect)
     {
       .x      = x1,
       .y      = this->height - y2,
@@ -185,7 +185,7 @@ bool egl_hdrOverlayBegin(EGL_HDROverlay * this,
   }
   else
   {
-    FrameDamageRect rects[damageCount];
+    KVMFRFrameDamageRect rects[damageCount];
     const int count = convertDamage(this, damage, damageCount, rects);
 
     egl_stateScissor(true);
@@ -227,7 +227,7 @@ void egl_hdrOverlayEnd(EGL_HDROverlay * this,
   }
   else
   {
-    FrameDamageRect rects[damageCount];
+    KVMFRFrameDamageRect rects[damageCount];
     const int count = convertDamage(this, damage, damageCount, rects);
 
     egl_stateScissor(true);