refactor(typescript): split into multiple ServicePlugins

[johnsoncodehk]

The goal of this PR is to reduce the number of abstractions and unnecessary files, and to provide optimal compatibility with Volar v2 Hybrid Mode.

Changes

• No longer re-expose ts module. Other service plugins should ask the ts module to be passed in as a parameter if necessary
• The create function now returns multiple ServicePlugins. If need to use a ServicePlugin alone to avoid the language server registering unnecessary trigger characters when using Hybrid Mode, you need to use the create function of the following entry file:
  • volar-service-typescript/lib/plugins/directiveComment
  • volar-service-typescript/lib/plugins/docCommentTemplate
  • volar-service-typescript/lib/plugins/semantic
  • volar-service-typescript/lib/plugins/syntactic
• Most feature code has been moved to volar-service-typescript/semantic rather than maintained in separate files