Add option to display only MANE transcripts in coverage module

[ehre]

(I don't know if this issue should be reported in the chanjo repository instead, feel free to redirect)

In the Chanjo Report in Scout, it would be nice to have an option (perhaps a tick box) to narrow down the information about fully/incompletely covered transcripts so only information on MANE Select (and perhaps also Plus Clinical) transcripts is shown when requested.

[northwestwitch]

It's a quite complicated feature that would require changes in 3 repositories I think: chanjo, chanjo-report and Scout. I say it's complicated because for how the database is built, chanjo doesn't know which transcripts are MANE transcripts and could even be that MANE transcripts are not even present in chanjo. So it would need a rearrangement of the database (with backward compatibility?). We started working on a new chanjo version some time ago, chanjo2. I don't know the status of the project at the moment but I think this issue has a place there. I'll move it!