feat: add new RBAC configuration for k8sgpt

[MateSousa]

Closes #259

📑 Description

Migrate all RBAC related resources to Helm chart's templates

✅ Checks

• [x] 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
• [x] All the tests have passed

ℹ Additional Information

[MateSousa]

@arbreezy sorry for the mess, now it's ok, and sorry for the delay, where I live we had a flu attack that made me sick.

[arbreezy]

thanks @MateSousa I just need to find time to test it with existing k8sgpt-operator installations so we make sure it doesn't break anything

[AlexsJones]

thanks @MateSousa I just need to find time to test it with existing k8sgpt-operator installations so we make sure it doesn't break anything

Let me know if you get a chance or I will later this week

[arbreezy]

DCO is not happy cause commits in this PR have been signed off with different email addresses.

A quick workaround is to re-open the PR and re-sign your commit(s) @MateSousa I'm not sure if just resigning the commits, will trigger a new DCO check cc: @AlexsJones