Pull the plug on reviewdog #114
Description
The necessity to eliminate reviewdog usage is long overdue, given the known security implications (requirement of pull_request_target event for nicer github-pr-review UI, reviewdog itself being maliciously modified before).
Switch to GitHub action annotations isn't as beautiful, but also doesn't need overbroad permissions and allows one to sleep more tightly.
pyrefly readily supports GitHub format annotations with --output-format github; conversion from mypy and pyright JSON output should also be straight forward.