Glean-parser

- Fix Swift code generation bug for pings ([333](https://github.com/mozilla/glean_parser/pull/333))

- Generate new event API construct ([321](https://github.com/mozilla/glean_parser/pull/321))

- Add option to add extra introductory text to generated markdown ([298](https://github.com/mozilla/glean_parser/pull/298))
- Add support for Qt in Javascript templates ([bug 1706252](https://bugzilla.mozilla.org/show_bug.cgi?id=1706252))
- Javascript templates will now accept the `platform` option. If this option is set to `qt`
the generated templates will be Qt compatible. Default value is `webext`.

- BUGFIX: Remove the "DO NOT COMMIT" notice from the documentation.

- Recommend to not commit as well as to not edit the generated files. ([bug 1706042](https://bugzilla.mozilla.org/show_bug.cgi?id=1706042))
- BUGFIX: Include import statement for labeled metric subtypes in Javascript and Typescript templates.

- Add support for labeled metric types in Javascript and Typescript templates.