Add Sentry Configuration to webapp

[GODrums]

Motivation

Solves task 2 of #202.

Description

This PR adds Sentry to the Angular webapp:

• https://sentry.ase.in.tum.de/organizations/aet/projects/hephaestus/?project=3
• Sentry DSN is set in environment.ts but can be overwritten with docker (SENTRY_DSN). DSNs are safe to keep public, according to Sentry Docs
• Errors are captured only if sentry.environment is not local
• Source maps are publicly hosted on Hephaestus and should get fetched by Sentry automatically (untested / doesn't work with preview deployments)

Testing Instructions

Locally:

• Set environment to prod in environment.ts
• Disable all content filter and ad blocker (especially UBlock)
• Open the developer tools of your browser
• Open the network tap & Reload the site once
• Search for sentry, check if all request to sentry are successful (status code 200)
• Optionally: throw a sample error (e.g. on button click) and check if it appears on Sentry

On Sentry:

• Go to https://sentry.ase.in.tum.de/
• Login with TUM Credentials
• Check the hephaestus project

Example test errors:

• https://sentry.ase.in.tum.de/organizations/aet/issues/1015/?project=3&referrer=issue-stream&statsPeriod=14d&stream_index=0

Checklist

General

• PR title is clear and descriptive
• PR description explains the purpose and changes
• Code follows project coding standards
• Self-review of the code has been done
• Changes have been tested locally
• Screenshots have been attached (if applicable)
• Documentation has been updated (if applicable)

Client (if applicable)

• UI changes look good on all screen sizes and browsers
• No console errors or warnings
• User experience and accessibility have been tested
• Added Storybook stories for new components
• Components follow design system guidelines (if applicable)

[iam-flo]

Check code quality check comments

[GODrums]

Check code quality check comments

Sorry, I meant to mark this PR as draft. I still want to add source map uploading before it would be ready to merge.

[FelixTJDietrich]

LGTM, thank you!