Add Github Action for Publishing to Comfy Registry

[robinjhuang]

This PR adds a Github Action (publish-node-action) that will publish an updated version of your custom node to the registry whenever the pyproject.toml file changes. The pyproject.toml defines the custom node version you want to publish (added in another PR).

Action Required:

• [ ] Make sure the trigger branch (master or main) in publish.yaml matches the branch you want to use as the publishing branch. It will only trigger when the pyproject.toml gets updated on that branch.
• [ ] Create an api key on the Registry for publishing from Github. Instructions.
• [ ] Add it to your Github Repository Secrets as REGISTRY_ACCESS_TOKEN.

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Summary by Sourcery

Introduce a GitHub Action to automate publishing custom nodes to the Comfy registry upon changes to the pyproject.toml file on specified branches.

CI:

• Add a GitHub Action workflow to publish a custom node to the Comfy registry when the pyproject.toml file changes on the main or master branch.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request adds a GitHub Action workflow to automatically publish custom nodes to the Comfy Registry when the pyproject.toml file is updated. The workflow is triggered on pushes to the main or master branch that modify the pyproject.toml file, and it uses a custom action to handle the publishing process.

File-Level Changes

Change	Details	Files
Add GitHub Actions workflow for publishing to Comfy Registry	Define workflow name and trigger conditions Set up job to run on ubuntu-latest Add condition to skip workflow on forked repositories Use actions/checkout to fetch repository code Implement custom publish-node-action for publishing to Comfy Registry Use REGISTRY_ACCESS_TOKEN secret for authentication	.github/workflows/publish.yml

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