Add removeArtifacts

[Rosalie241]

it seems like this works fine though I'm still not experienced with typescript/javascript so feedback is welcome.

Closes #108

[ncipollo]

Hey @Rosalie241,
Thanks for the PR!! I'll take a closer look when I get a chance later this week, but in the meantime, would you be able to also update tests (Inputs.test.ts and ArtifactUploader.test.ts`)?

[Rosalie241]

Hey @Rosalie241,
Thanks for the PR!! I'll take a closer look when I get a chance later this week, but in the meantime, would you be able to also update tests (Inputs.test.ts and ArtifactUploader.test.ts`)?

Done, tests should pass now, though I wasn't sure how to exactly add/test removeArtifacts in ArtifactUploader.test.ts so I left that alone for now.

[ncipollo]

The changes look good, we just need to update the ArtifactUploader test now. Here are the steps I'd take to update that test:

1. Add a new argument to the test method which creates the artifact upload - removes. This method can be found here

   release-action/__tests__/ArtifactUploader.test.ts

   Line 173 in ec90733

   function createUploader(replaces: boolean, throws: boolean = false): GithubArtifactUploader {

2. Pass this new argument into the constructor for ArtifactUploader in the test.
3. Copy the replaces all artifacts test. Name the new test removes all artifacts. That test can be found here:

   release-action/__tests__/ArtifactUploader.test.ts

   Line 73 in ec90733

   it('replaces all artifacts', async () => {

4. Update the new test so it sets your flag instead of the replaces flag. I think you can leave the body of the test mostly the same. This will just verify that the uploader will delete all of the existing artifacts.

[Rosalie241]

added & pushed

[ncipollo]

Looks good! Thanks for the PR!! I'll do some additional testing next week then cut a new release with these changes in it.