Default-empty vectors of enums (#6505)

* disable clippy

* Vector of enum default

* swift and tests

* git clang format

* Rewrite enum parser checks

* Remove Voids from more_defaults

* vector enum swift

* remove vector accessor from swift

* clang format

Co-authored-by: Casper Neo <cneo@google.com>

tests/test.cpp

@@ -3672,6 +3672,7 @@ void StringVectorDefaultsTest() {
   schemas.push_back("table Monster { mana: [int] = []; }");
   schemas.push_back("table Monster { mana: [uint] = [  ]; }");
   schemas.push_back("table Monster { mana: [byte] = [\t\t\n]; }");
+  schemas.push_back("enum E:int{}table Monster{mana:[E]=[];}");
   for (auto s = schemas.begin(); s < schemas.end(); s++) {
     flatbuffers::Parser parser;
     TEST_ASSERT(parser.Parse(s->c_str()));