3.0.0 - Code Gen QoL

Added

• UXML Code Generation:
  • Option to override namespace for generated C# files from UXML importer header.
  • Option to generate a second file of a generated partial class.
  • Project-wide settings for code generation.
    • support for pascal case and camel case styles
    • support for prefix and suffix for code identifiers
  • Custom icon for .gen.cs files.

Changed

• generate c# script context action moved to the dropdown menu in UXML Importer header.
• UXML attribute rename: code-gen-prefix -> gen-cs-private-field-prefix