Cleanup: Versioning: silence Clang-Tidy readability-function-size

This adds `NOLINT` markers to explicitly silence warnings from Clang-Tidy's
`readability-function-size` rule for versioning functions. Technically
these could be refactored and split up into smaller bits, but generally
they are hardly ever looked at once they're a few releases old.

No functional changes.

source/blender/blenloader/intern/versioning_250.c

@@ -635,6 +635,7 @@ static void do_versions_socket_default_value_259(bNodeSocket *sock)
   }
 }
 
+/* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_250(FileData *fd, Library *lib, Main *bmain)
 {
   /* WATCH IT!!!: pointers from libdata have not been converted */

source/blender/blenloader/intern/versioning_260.c

@@ -658,6 +658,7 @@ static void do_versions_nodetree_customnodes(bNodeTree *ntree, int UNUSED(is_gro
   }
 }
 
+/* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_260(FileData *fd, Library *UNUSED(lib), Main *bmain)
 {
   if (bmain->versionfile < 260) {

source/blender/blenloader/intern/versioning_270.c

@@ -420,6 +420,7 @@ static void do_version_bbone_easing_fcurve_fix(ID *UNUSED(id),
   }
 }
 
+/* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_270(FileData *fd, Library *UNUSED(lib), Main *bmain)
 {
   if (!MAIN_VERSION_ATLEAST(bmain, 270, 0)) {

source/blender/blenloader/intern/versioning_280.c

@@ -1792,6 +1792,7 @@ static void do_versions_seq_set_cache_defaults(Editing *ed)
   ed->recycle_max_cost = 10.0f;
 }
 
+/* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_280(FileData *fd, Library *UNUSED(lib), Main *bmain)
 {
   bool use_collection_compat_28 = true;

source/blender/blenloader/intern/versioning_legacy.c

@@ -493,6 +493,7 @@ void blo_do_version_old_trackto_to_constraints(Object *ob)
   ob->track = NULL;
 }
 
+/* NOLINTNEXTLINE: readability-function-size */
 void blo_do_versions_pre250(FileData *fd, Library *lib, Main *bmain)
 {
   /* WATCH IT!!!: pointers from libdata have not been converted */