stats: add ts type generation for chart ids

[bragov4ik]

Request from frontend side. Needed for references to particular charts from corresponding widgets (e.g. in verified contracts page). Currently id's are hardcoded, but it's better to have some compile-time check for them in the frontend.

One possible solution - add the id's to *.proto, generate corresponding ts types in pipeline, and verify the id list completeness in rust compile-time (similarly to resolutions, but it will be just an enum type, not something in the actual interface (it could be a good idea to add though?? needs deeper look) ).