Introduce a "global_settings" config in digger.yml

[fleroux514]

Ex:

global_settings:
     include: ["terraform-version, "ci.yml", "digger.yml"]
     exclude: []
     workflow: default_workflow_name

The include and exclude sections in this config would apply to all projects defined in digger.yml, which means that those values would be be appended to any values defined under include or exclude at the project level.

[ZIJ]

Thanks for the idea!! Tagging @veziak @Spartakovic for input