[FL-2675] /int space reservation (#1448)

* storage: added global #defines for /int, /ext & /any
* storage: introduced PATH_EXT, PATH_INT& PATH_ANY macros
* core apps: moved hardcoded config files names to separate headers; prefixed them with "."; updater: added file name migration to new naming convention on backup extraction
* storage: fixed storage_merge_recursive handling of complex directory structures; storage_move_to_sd: changed data migration logic to all non-dot files & all folders
* core: added macro aliases for core record names
* Bumped protobuf commit pointer
* storage: reserved 5 pages in /int; denying write&creation of non-dot files when running out of free space

Co-authored-by: あく <alleteam@gmail.com>

applications/storage_move_to_sd/application.fam

@@ -3,7 +3,7 @@ App(
     name="StorageMoveToSd",
     apptype=FlipperAppType.SYSTEM,
     entry_point="storage_move_to_sd_app",
-    requires=["gui","storage"],
+    requires=["gui", "storage"],
     provides=["storage_move_to_sd_start"],
     stack_size=2 * 1024,
     order=30,
@@ -16,4 +16,3 @@ App(
     requires=["storage"],
     order=120,
 )
-