feat: Add new aws_cloudfront_key_group data source

[terenho]

Description

This PR is to add the new data source for aws_cloudfront_key_group. The data source can be queried by Key Group IDs or Key Group names.

Relations

Closes #28534

Requested Resource(s) and/or Data Source(s)

• aws_cloudfront_key_group

References

• Refer to GetKeyGroup for specs

Output from Acceptance Testing

$ make testacc TESTS="TestAccCloudFrontKeyGroupDataSource_" PKG=cloudfront
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.2 test ./internal/service/cloudfront/... -v -count 1 -parallel 20 -run='TestAccCloudFrontKeyGroupDataSource_'  -timeout 360m
2024/10/26 03:12:53 Initializing Terraform AWS Provider...
=== RUN   TestAccCloudFrontKeyGroupDataSource_basic
=== PAUSE TestAccCloudFrontKeyGroupDataSource_basic
=== RUN   TestAccCloudFrontKeyGroupDataSource_disappears
=== PAUSE TestAccCloudFrontKeyGroupDataSource_disappears
=== RUN   TestAccCloudFrontKeyGroupDataSource_name
=== PAUSE TestAccCloudFrontKeyGroupDataSource_name
=== CONT  TestAccCloudFrontKeyGroupDataSource_basic
=== CONT  TestAccCloudFrontKeyGroupDataSource_disappears
=== CONT  TestAccCloudFrontKeyGroupDataSource_name
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/index.json
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/index.json
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/index.json
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS.72D7468F.sig
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS.72D7468F.sig
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS.72D7468F.sig
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_SHA256SUMS
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_linux_amd64.zip
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_linux_amd64.zip
2024/10/26 03:12:54 [DEBUG] GET https://releases.hashicorp.com/terraform/1.9.8/terraform_1.9.8_linux_amd64.zip
--- PASS: TestAccCloudFrontKeyGroupDataSource_disappears (8.66s)
--- PASS: TestAccCloudFrontKeyGroupDataSource_basic (30.34s)
--- PASS: TestAccCloudFrontKeyGroupDataSource_name (30.98s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/cloudfront	31.326s
$

[github-actions]

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[github-actions]

Welcome @terenho 👋

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Thanks again, and welcome to the community! 😃