feat: add build id from commit hash (#1095)

* fix old ref

* capture git commit as build ID

* generate new types

* display build on Site Settings page

* fix extras crash it extras is none

mealie/schema/admin/about.py

@@ -23,6 +23,7 @@ class AdminAboutInfo(AppInfo):
     db_type: str
     db_url: str | None
     default_group: str
+    build_id: str
 
 
 class CheckAppConfig(CamelModel):