feat: Added domain_name as a computed output variable to the Serverless

[stephenhand]

Resolves #85

Adds a domain_name output variable to the Serverless Environment resource. This can then be passed to other resources that need to be configured to call the functions deployed in this environment.

Checklist

• [x] I acknowledge that all my contributions will be made under the project's license
• [x] I have made a material change to the repo (functionality, testing, spelling, grammar)
• [?] I have read the Contribution Guidelines and my PR follows them - that is a dead link?
• [x] I have titled the PR appropriately
• [x] I have updated my branch with the main branch
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added the necessary documentation about the functionality in the appropriate .md file
• [N/A] I have added inline documentation to the code I modified

[stephenhand]

These are auto-generated fields and this change needs to happen in the generator. That said, we have this issue in our backlog and we will be working on fixing it in the near future.

Ok, thanks for the update! Could you perhaps provide some guidance about the nature of this repo and how it is produced & maintained in the contributing docs to assist future contributors?

Unless it's already there and I missed it, in which case nm!

[janorivera]

@shwetha-manvinkurke Hi, I was wondering if this got fixed. 9 months after the issue was raise seems to me like the "near future".