Add linter for spelling/typos

[RealAnna]

In spite of our reviewing efforts some typo often makes it through and gets into our documentation.
This is probably true also for code and other files.
Let's add a spell checker action so that we can detect this before merge 🤕

AC

• add a new pipeline to run for every commit using https://github.com/marketplace/actions/typos-action
  you can take inspiration from the html one here
• configure some Keptn specific exceptions
• fix all detected typos

DoD

• no more typos in docs
• new PRs cannot be merged until typos are fixed

[mowies]

I think we should not only execute the spell checker for docs but maybe also for go files and yaml files, maybe even all files.
We have lots of spots where docs comments are in the code, or comments in yaml examples, helm values with docs etc.

[sambhavgupta0705]

Can I try working on this issue??

[mowies]

sure thing @sambhavgupta0705 ! I assigned the issue to you :)
If you need any help, just @ us here

[sambhavgupta0705]

thanks @mowies
I am considering to use this github action https://github.com/check-spelling/check-spelling

[mowies]

we double checked your suggestion. the action from the issue description is actually far more widely used, so please use github.com/marketplace/actions/typos-action

[mowies]

Sorry @sambhavgupta0705, but I just checked out the typos-action in more detail and it doesn't really do what we require. There, we would need to define our own typo corrections manually which is not something we wanna do.
So I think your initial suggestion of using check-spelling was actually much better. If you have the time, please change to that action.
There a good example workflow here.

We only want the minimal setup for now that is decsribed here. Although the job doesn't need to run on push, just on pull_request_target since we only wanna run on PRs and not on normal branch pushes e.g. to main branch.

[mowies]

If you need any help, or if this is too much hassle for you, please just tell me then, I'll help out or take over.

[sambhavgupta0705]

@mowies yes I will look into this and make the essential changes