Ignore noisy clang-tidy warnings (aseprite/aseprite#6016)

Author: dacap

.clang-tidy

@@ -56,9 +56,11 @@ Checks: >
   -bugprone-easily-swappable-parameters,
   -bugprone-narrowing-conversions,
   -clang-analyzer-optin.core.EnumCastOutOfRange,
+  -misc-const-correctness,
   -misc-include-cleaner,
   -misc-use-anonymous-namespace,
   -readability-braces-around-statements,
+  -readability-convert-member-functions-to-static,
   -readability-function-cognitive-complexity,
   -readability-identifier-length,
   -readability-isolate-declaration,