Add pre-configured defaults for funding, dependabot, and pre-commit

[cclauss]

Ensure all new Celery repos have pre-configured defaults for funding, dependabot, and pre-commit.

• https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/creating-a-default-community-health-file#creating-a-repository-for-default-files bullet 3.
• https://results.pre-commit.ci/repo/github/503414928

Fixes #2

• Add FUNDING.yml #2

@Nusnus