feat(#minor); CI/CD; Add capability to deploy only and add action to test builds on pushing to the remote branched in this repo.

[steegecs]

Context:

• There have been many instances where subgraphs fail to deploy upon merging into the master repository. This has often been due to build failing for various reasons at the time of merge. We wanted to add the capability to build only in the script, and test the builds on pushing to the repo before merging.
• These changes will require an update to the deployment.js and execution.js files in the deployment folder, the creation of a new action, and updating the npm deploy script in each subgraph folder to include a new parameter for specifying the action (just building or deploying.)

[jaimehgb]

Looking good! Eager to see it live :D

Left a few minor suggestions, and the comment about the action issue which might be the only really important thing

[this-username-is-taken]

Amazing work!