More descriptive names for CS_BEGIN_CUTSCENE and CS_END (#2311)

* rename CS_BEGIN_CUTSCENE and CS_END

* matching

* naming consistency for END command, improved comments

* remove CS_CMD_NONE

Co-authored-by: mzxrules <mzxrules@gmail.com>

* remove comma from end of enum

* git subrepo pull --force tools/ZAPD

subrepo:
  subdir:   "tools/ZAPD"
  merged:   "c04562d30"
upstream:
  origin:   "https://github.com/zeldaret/ZAPD.git"
  branch:   "master"
  commit:   "c04562d30"
git-subrepo:
  version:  "0.4.9"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "cce3d93"

---------

Co-authored-by: mzxrules <mzxrules@gmail.com>
Co-authored-by: fig02 <fig02srl@gmail.com>

src/code/z_demo.c

@@ -1813,7 +1813,7 @@ void Cutscene_ProcessScript(PlayState* play, CutsceneContext* csCtx, u8* script)
         MemCpy(&cmdType, script, sizeof(cmdType));
         script += sizeof(cmdType);
 
-        if (cmdType == CS_CAM_STOP) {
+        if (cmdType == CS_CMD_END_OF_SCRIPT) {
             return;
         }