DXCDT-515: Client grants resource export support

[willvedd]

🔧 Changes

Introducing support for exporting the auth0_client_grant resource with the reverse terraform functionality.

The output will appear like this:

import {
  id = "cgr_1WD0mr76sNmRi0Hq"
  to = auth0_client_grant.BZRIum1HFFj1x_httpstravel0usauth0comapiv2
}

import {
  id = "cgr_OqbXFjrBsN1qSwty"
  to = auth0_client_grant.hvxA5ojdxUw_httpstravel0usauth0comapiv2
}

Admittedly, the formatting of the audience, usually a URL, is not pleasant but this will be corrected in a follow-up PR which will clean-up all resource names.

📚 References

Related PRs: #808, #797, #810, #809 #812 #811

🔬 Testing

Adding unit tests, manually verified.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[sergiught]

Would be nice to get the client name here 😭 but I know we don't have access to it on the client grant, so nothing actionable, just a note.

[willvedd]

Agreed, its similar to what we do in Deploy CLI. I'll add a ticket for this enhancement.

[codecov-commenter]

Codecov Report

Patch coverage: 89.47% and project coverage change: +0.08% 🎉

Comparison is base (062091f) 72.10% compared to head (56119fb) 72.18%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #815      +/-   ##
==========================================
+ Coverage   72.10%   72.18%   +0.08%     
==========================================
  Files          91       91              
  Lines       11474    11531      +57     
==========================================
+ Hits         8273     8324      +51     
- Misses       2696     2702       +6     
  Partials      505      505              

Files Changed	Coverage Δ
internal/cli/terraform.go	65.51% <0.00%> (-1.55%)	⬇️
internal/cli/terraform_fetcher.go	100.00% <100.00%> (ø)

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