chore: Update CLI schema

Author: TolgeeMachine

static/cli-schema.json

@@ -243,15 +243,15 @@
           "$ref": "#/$defs/path"
         },
         "language": {
+          "description": "Explicitly map file to language.\n\nIf not provided, backend will try to detect language from language name or it's content.",
           "type": "string"
         },
         "namespace": {
           "type": "string"
         }
       },
       "required": [
-        "path",
-        "language"
+        "path"
       ]
     },
     "forceMode": {
@@ -285,6 +285,7 @@
         "PO_PYTHON",
         "APPLE_STRINGS",
         "APPLE_XLIFF",
+        "APPLE_XCSTRINGS",
         "PROPERTIES_ICU",
         "PROPERTIES_JAVA",
         "ANDROID_XML",