Feature Request: any file mode

[cardil]

Hi,

I'd like to propose a feature. To add a any == false flag to the action. If set to true, the action will return true, if any of the listed globs matches, as opposed to the default setting where all files must exist.

This feature will greatly simplify a common case, where we'd like to check the existence of any of the listed files:

- id: golang-sources
  uses: andstor/file-existence-action@v2
  with:
    files: go.mod, go.work
    any: true

- name: Build Go sources
  if: ${{ steps.golang-sources.outputs.files_exists == 'true' }}
  run: |
    go build ./...

instead of:

- id: gomod
  uses: andstor/file-existence-action@v2
  with:
    files: go.mod

- id: gowork
  uses: andstor/file-existence-action@v2
  with:
    files: go.work

- name: Build Go sources
  if: ${{ steps.gomod.outputs.files_exists == 'true' || steps.gowork.outputs.files_exists == 'true' }}
  run: |
    go build ./...