Add separate crowdin.yml for docs (#10916)

crowdin.yml

@@ -1,3 +1,5 @@
 files:
-  - source: /docs/en/**/*.md
-    translation: /docs/%two_letters_code%/**/%original_file_name%
+  - source: /translations/qgc.ts
+    translation: /translations/qgc_source_%locale_with_underscore%.ts
+  - source: /translations/qgc-json.ts
+    translation: /translations/qgc_json_%locale_with_underscore%.ts

crowdin_docs.yml

@@ -0,0 +1,3 @@
+files:
+  - source: /docs/en/**/*.md
+    translation: /docs/%two_letters_code%/**/%original_file_name%