feat: add scaleway provider with scaleway_function_namespace resource support

[norbjd]

Q	A
🐛 Bug fix?	no
🚀 New feature?	yes
⚠ Deprecations?	no
❌ BC Break	no
🔗 Related issues
❓ Documentation	yes

Description

Hello :wave:

First of all, thanks for this great tool! :heart_eyes:

This PR adds support for Scaleway provider. Scaleway is an european cloud provider.

I've followed the documentation to add a new provider, and also added a new resource (for testing purpose): scaleway_function_namespace (a resource related to the serverless function product to logically group serverless functions). For reference, the description of scaleway_function_namespace is here, and the Terraform definition is here. I have added unit and acceptance tests to verify everything works properly.

If this PR is satisfying, I'll try to add more resources. It should be probably possible to add more resources automatically from the Go SDK or the Terraform provider.

I also have a few questions since it's my first PR here (I've added GitHub comments on the related code).

Thank you very much :smiley:

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #1648 (1d9632d) into main (50f8f2d) will decrease coverage by 1.59%. The diff coverage is 75.00%.

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1648      +/-   ##
==========================================
- Coverage   79.60%   78.02%   -1.59%     
==========================================
  Files         229      224       -5     
  Lines        7183     7030     -153     
==========================================
- Hits         5718     5485     -233     
- Misses       1270     1347      +77     
- Partials      195      198       +3     

Impacted Files	Coverage Δ
pkg/resource/resource_types.go	76.47% <ø> (ø)
pkg/resource/schemas/repository.go	63.88% <50.00%> (-0.54%)	:arrow_down:
pkg/resource/scaleway/metadatas.go	100.00% <100.00%> (ø)
...g/resource/scaleway/scaleway_function_namespace.go	100.00% <100.00%> (ø)

... and 26 files with indirect coverage changes

[norbjd]

Hello @wbeuil :wave: have you had the chance to take a look at this? Any feedback would be appreciated, thanks in advance! Also sorry for the ping, but I don't really know who else to tag :sweat_smile: