Adds workflow:create command

[jonsamp]

Why

Adds eas workflow:create to make it faster to create workflow files in a project. This command creates a file like .eas/workflows/workflow.yml. The user can choose the file name or can provide it as an arugment.

Screenshots

Test Plan

Make sure that you can run the command as pictured above and that it correctly creates the workflow file. Also make sure that the unit tests pass.

Future

Once we have docs for workflows that are public, I'd like to put a link to the docs in the default file this command creates. For now, I am just putting Hello World as a reasonable placeholder.

[linear[bot]]

ENG-14102 Create eas workflow:create command

[github-actions[bot]]

Subscribed to pull request	File Patterns	Mentions
**/*	@szdziedzic, @khamilowicz, @sjchmiela

Generated by CodeMention

[github-actions[bot]]

Size Change: +1.83 kB (0%)

Total Size: 52.9 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	52.9 MB	+1.83 kB (0%)

_{compressed-size-action}

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 32.69231% with 35 lines in your changes missing coverage. Please review.

Project coverage is 52.76%. Comparing base (c7cfcaf) to head (85e6dee). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/eas-cli/src/commands/workflow/create.ts	33.34%	32 Missing :warning:
packages/eas-cli/src/utils/workflowFile.ts	25.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2678 +/- ## ========================================== - Coverage 52.81% 52.76% -0.04% ========================================== Files 578 579 +1 Lines 22135 22187 +52 Branches 4334 4339 +5 ========================================== + Hits 11688 11705 +17 - Misses 10413 10448 +35 Partials 34 34 ```

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[github-actions[bot]]

⏩ The changelog entry check has been skipped since the "no changelog" label is present.