Proposal: install coderabbit code review

[anthonywu]

CodeRabbit.ai offers free code reviews for open source projects.

They have a GitHub installer here: https://github.com/apps/coderabbitai/installations/select_target

I already installed in my personal fork, and opened a test PR to verify the GitHub UI install steps above is sufficient to activate: anthonywu#5

within a minute of creating the PR, the coderabbitai bot joined:

• @filipstrand to activate for filipstrand/mflux repo

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Also considered, https://graphite.dev/blog/startup-program-announcement

However, @filipstrand would have to:

1. create a GitHub org
2. contact Graphite team to activate the free plan

[anthonywu]

I also applied for Greptile

[filipstrand]

@filipstrand to activate for filipstrand/mflux repo

Just activated it (have not done any specific configurations). It seems to work out of the box directly now when commenting on an already open PR: #267