feat(service): Add Flowy compose template

[Xen0Xys]

Changes

• Add Flowy service

Category

• Adding new one click service

AI Assistance

• AI was NOT used to create this PR

Testing

Tested docker compose on my personal coolify instance.

Contributor Agreement

Important

• I have read and understood the contributor guidelines. If I have failed to follow any guideline, I understand that this PR may be closed without review.
• I have searched existing issues and pull requests (including closed ones) to ensure this isn't a duplicate.
• I have tested all the changes thoroughly with a local development instance of Coolify and I am confident that they will work as expected when a maintainer tests them.

[ShadowArcanist]

Just a note: services need to have at least 1,000 stars on their GitHub repository inorder to be added to Coolify's one click service list

[Xen0Xys]

Just a note: services need to have at least 1,000 stars on their GitHub repository inorder to be added to Coolify's one click service list

I didn't know that, thanks. I will wait before marking my PR as ready for review.