feat: merge incidents

[Kiryous]

Closes #2042

📑 Description

This PR combines

1. previously reviewed parts of the Merge Incidents feature:
   1. feat: add merge incidents endpoint [dnm] #2259
   2. feat: merge incidents list (frontend + severity update fix) #2311
2. Polish of Incidents List UI: dropdown menu, status change dropdown, demo:
   
   Watch Loom

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

ℹ Additional Information

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
keep	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 29, 2024 10:35am

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
14332896	Triggered	Generic Password	5714d39	keep/providers/graylog_provider/docker-compose.yml	View secret
14332896	Triggered	Generic Password	979d388	keep/providers/graylog_provider/docker-compose.yml	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

---

^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[shahargl]

lgtm

[Matvey-Kuk]

This is brilliant. About polishing, I’m so happy you have this passion for small details!