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Fix namespace/option end token

v0.0.6

fix: 🐛 fix namespace & option end token

Parser.NextIdent refactor

parser.nextIdent concat dot separated identifier into one token.

Add token to node map

Add start token to node map for Enum => EnumElement, Struct => Field, Service => Function, Function => Args, Function => Throws, in order to facilitate obtaining the corresponding node through start token, while traverse tokens.

Token

1. make token type to public
2. add GetToken function

Initial Release

v0.0.1

docs: ✏️ docing