chore: disable all clang-tidy checks in third_party libraries

cmake/build_helpers.cmake

@@ -559,6 +559,9 @@ function(detectBadClone)
 
     file (GLOB EXTERNAL_DIRS "lib/external/*" "lib/third_party/*")
     foreach (EXTERNAL_DIR ${EXTERNAL_DIRS})
+        if(NOT IS_DIRECTORY "${EXTERNAL_DIR}")
+            continue()
+        endif()
         file(GLOB_RECURSE RESULT "${EXTERNAL_DIR}/*")
         list(LENGTH RESULT ENTRY_COUNT)
         if(ENTRY_COUNT LESS_EQUAL 1)

lib/third_party/.clang-tidy

@@ -0,0 +1,2 @@
+# Disable all checks
+Checks: '-*'