undiverged branches #2073
Description
as mentioned in https://docs.digger.dev/ce/howto/apply-requirements#requiring-undiverged-branches-in-prs the default behavoiur of digger still comes with some risks if the requirement for undiverged branches is not checked in digger.yml
In order to protect users this should be the default behaviour to check for diverged branches unless users intend to turn it off. Proposal is to add a flag that is enabled by default to check for undiverged branches before any plan/apply commands. This would be similar to https://www.runatlantis.io/docs/command-requirements#undiverged