Use workflow organization templates

[raimund-schluessler]

Tasks should use the workflow templates from https://github.com/nextcloud/.github for lint, node-test and phpunit.

[raimund-schluessler]

@skjnldsv Am I missing something or is there no template for running javascript tests via npm run test (and upload coverage to codecov)? Similar to https://github.com/nextcloud/tasks/blob/master/.github/workflows/node-test.yml.

[skjnldsv]

Currently, there is none. Feel free to add one :)

[raimund-schluessler]

Currently, there is none. Feel free to add one :)

I created an issue for now, https://github.com/nextcloud/.github/issues/128. Might look into it later.