v0.50.0

Changelog

• 9272e7c feat(gen): features and fixes for java filters
• ce5795b feat(gen): jni supports externs and interfaces
• ee74346 feat(gen): prepare java filters for externs
• 768ba43 feat(pkg): add iterating over externs in rules
• 0499ec6 fix ci issues identified by golangci-lint
• 669282b fix(filters): fix java async return value
• e035cf2 fix(filters): fix java test value filter
• 3dc5ad7 fix(gen): jni filter supports all type names