Genome builds have no unified format

[gromdimon]

Describe the bug
Currently genome builds have different "names"/"labels" in different APIs. For example:

https://reev.cubi.bihealth.org/internal/proxy/mehari/genes/txs?hgncId=HGNC:4806&genomeBuild=GENOME_BUILD_GRCH37&pageSize=1000

https://reev.cubi.bihealth.org/internal/proxy/mehari/seqvars/csq?genome_release=grch37&chromosome=6&position=24302274&reference=T&alternative=C

To Reproduce
N/A

Expected behavior
There should be one standard for genome builds across the mehari APIs.

Additional context
N/A

[xiamaz]

Issue is that currently the type definition for the seqvar/structvar endpoints are defined in rust, whereas the tx endpoint is directly defined in protobuf.

All exposed API endpoints should be defined consistently. Putting query definitions in protobuf might have the nice effect for allowing non-http APIs, but might be less easy to use in rust.

[xiamaz]

Currently prost is used to interface with protobuf defined structures, whereas everything else uses serde. Both are unfortunately not compatible.

As a general design, moving everything i/o facing into protobuf might make sense.

[xiamaz]

Action plan

• define all request/response types for seqvar/structvar in protobuf
• coordinate change with tools depending on proper mehari server functionality (currently reev and varfish)