Namersw (#7167)

* Define and use Namer overloads

* more

* NamespacedType needs a public string-like overload

* Move Rust FieldOffsetName to Namer LegacyRustFieldOffsetName

* Started swift

* More Namer updates

* Remove more usage of the variable 'name' which was semantically overloaded

* unshadow varible

* Make ptr to bool explicit

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

src/idl_gen_python.cpp

@@ -49,6 +49,7 @@ Namer::Config PythonDefaultConfig() {
            /*variable=*/Case::kLowerCamel,
            /*variants=*/Case::kKeep,
            /*enum_variant_seperator=*/".",
+           /*escape_keywords=*/Namer::Config::Escape::BeforeConvertingCase,
            /*namespaces=*/Case::kKeep,  // Packages in python.
            /*namespace_seperator=*/".",
            /*object_prefix=*/"",