fix: add --forbid-only to husky hook, fix nyc file

[WillieRuemmele]

@W-10290171@

will fix future projects when running yarn sf-install

[mshanemc]

does this fix mean it starts applying the 90 now? how does this interact with https://github.com/forcedotcom/dev-config/pull/3/files ?

[WillieRuemmele]

yes, this repo had a custom nyc file - it wasn't in the correct format though. I'm sure we can have it use the default from dev-config. It doesn't have any tests anyways 🤷‍♂️

[cristiand391]

QA notes

✅ pre-push: yarn build && yarn test --forbid-only hook generated if no hook exist
✅ Added .only to a test, was able to commit but failed to push:

Error: `.only` forbidden by --forbid-only
...
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
husky - pre-push hook exited with code 1 (error)
error: failed to push some refs to 'github.com:salesforcecli/plugin-source.git'