Add mscppls repeated-crash diagnostic

Define the localized native string used when mscppls --check can no
longer restart the C++ analysis process after repeated crashes.

Author: kuchungmsft

Extension/src/nativeStrings.json

@@ -785,5 +785,9 @@
     "selected_translation_unit_not_include_file_header_only": {
         "text": "The selected translation unit '{0}' does not include '{1}'. No previous translation unit is available, so IntelliSense will use '{1}' as a header-only translation unit.",
         "hint": "{0} is the selected translation unit path. {1} is the active file path. {Locked=\"IntelliSense\"} {Locked=\"{0}\"} {Locked=\"{1}\"}"
+    },
+    "check_analysis_process_crashed_repeatedly": {
+        "text": "The C++ analysis process crashed repeatedly while checking \"{0}\".",
+        "hint": "{0} is the source file path. {Locked=\"C++\"} {Locked=\"{0}\"}"
     }
 }