TPT 2101: add users data source

[yec-akamai]

📝 Description

Add users data source and apply the terraform framework. Build test cases to test basic, client filter, and substring filter.
Add missing fields to user attributes.

✔️ How to Test

make PKG_NAME="linode/user" testacc

[zliang-akamai]

Another doubt I have is that verified_phone_number is a nullable field from API. I think we may want to fix this from linodego by making it as a pointer in the linodego struct.

[zliang-akamai]

Others look good! Nice work on the sharing of resources between user and users!

[yec-akamai]

Another doubt I have is that verified_phone_number is a nullable field from API. I think we may want to fix this from linodego by making it as a pointer in the linodego struct.

Thanks for pointing it out! I put up the fix in linodego now linode/linodego#339

[zliang-akamai]

GHA run results:
https://github.com/linode/terraform-provider-linode/actions/runs/5358436209
https://github.com/linode/terraform-provider-linode/actions/runs/5358434976

[zliang-akamai]

@yec-akamai don't forget the docs, lol

Feel free to do it in another PR.

[yec-akamai]

@yec-akamai don't forget the docs, lol

Feel free to do it in another PR.

Thanks for the heads up! I'll merge this one and create another for the docs.