overwrite destination branch as a argument

[Nr18]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
The default behaviour is that the destination branch is pulled from a configuration file. When the profile has no destination configured it falls back on a default config. When this default is not correct you now need a profile specific configuration. This makes sense for repos that you use often but you do not want to configure this for a "one off" repository.

By supporting an overwrite option we make it easier to create a pull request for these "one off" repository. Or when you have multiple phases like: feature branch --> development --> main you can create the pr from feature branch to development using a default. And from development to main using an overwrite.

For example:

# Creates PR from `feature branch` --> `development`
pull-request-codecommit 
# Do review and get approval
# Pull the merged changes
git checkout development
git pull
# Creates PR from `development` --> `main`
pull-request-codecommit main

Describe alternatives you've considered

Additional context