[Feature request] Add new parameter "minimum_coverage_per_file"

[tprouvot]

Hi, Thanks for this action, it is very helpful !

It would be nice to have two distinct a new parameter which would be : minimum_coverage_per_file

Example:

- name: cobertura-report
        uses: 5monkeys/cobertura-action@v13
        with:
          path: cobertura/coverage/cobertura.xml
          minimum_coverage: 75
          minimum_coverage_per_file: 70

And result would be

first example KO

File	Coverage	Lines		Missing
All files	75%	75%	:white_check_mark:
no-map/AccountTriggerHandler	100%	100%	:white_check_mark:
no-map/AccountContactRelation	50%	50%	:x:

Minimum coverage requirement was not satisfied (75% global and 70% per file )

- name: cobertura-report
        uses: 5monkeys/cobertura-action@v13
        with:
          path: cobertura/coverage/cobertura.xml
          minimum_coverage: 85
          minimum_coverage_per_file: 75

second example OK

File	Coverage	Lines		Missing
All files	87%	87%	:white_check_mark:
no-map/AccountTriggerHandler	100%	100%	:white_check_mark:
no-map/AccountContactRelation	75%	75%	:white_check_mark:

Minimum coverage requirement satisfied (85% global and 75% per file )

[Rasmus-Fink]

In our project we currently can't fail a build when a single files is below the threshold. The suggested option would come in very handy here!