[Sentry] Dedupe releases & use Sentry x Github integrations

[shanimal08]

Describe the problem

the current sentry implementations SUCK can be improved upon 😁 because we haven't used sentry-cli

• there are always 2 releases created for each version bump (one for FE, one for BE) because of how we init Sentry on either side
• BE issues on sentry always have the A required debug information file was missing (1) problem & messy stack traces

Expected behaviour

• one sentry release ₜₒ ᵣᵤₗₑ ₜₕₑₘ ₐₗₗ per .... release
• debug information (for each platform) should be uploaded for BE during the builds and releases

What to do?

• use sentry-cli in our GH workflows to create releases, instead of in the inividual inits on FE/BE
• upload debug information from workflow builds
• set up Sentry x GH integration for this repo on Sentry
  • first prize:
    • release mgmt
  • nice to haves:
    • issue tracking
    • ....all the other cool stuff