Add git.DIFF_RENAME_SIMILARITY_THRESHOLD option (#36164)

Make the threshold value passed to `git diff --find-renames` configurable

custom/conf/app.example.ini

@@ -733,6 +733,9 @@ LEVEL = Info
 ;DISABLE_CORE_PROTECT_NTFS=false
 ;; Disable the usage of using partial clones for git.
 ;DISABLE_PARTIAL_CLONE = false
+;; Set the similarity threshold passed to git commands via `--find-renames=<threshold>`.
+;; Default is 50%, the same as git. Must be a integer percentage between 0% and 100%.
+;DIFF_RENAME_SIMILARITY_THRESHOLD = 50%
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Git Operation timeout in seconds