Adding powerplatform_environment_group_rule_set

[mawasile]

This pull request introduces a new resource for managing Power Platform environment group rule sets, along with several supporting changes across the codebase. The most important changes include the addition of the new resource, updates to various files to support this new resource, and improvements to existing code for better functionality and maintainability.

New Resource Addition:

• Added a new resource powerplatform_environment_group_rule_set with various rule configurations in examples/resources/powerplatform_environment_group_rule_set/resource.tf.

Supporting Changes for New Resource:

• Created new API client and methods for managing environment group rule sets in internal/services/environment_group_rule_set/api_environment_group_rule_set.go.
• Defined constants for environment group rule sets in internal/services/environment_group_rule_set/constants.go.
• Updated provider to include the new environment group rule set resource in internal/provider/provider.go and internal/provider/provider_test.go [1] [2] [3] [4].

Code Improvements:

• Refactored internal/services/connection/api_connection.go to use helper functions for building URIs, improving code readability and maintainability [1] [2] [3] [4] [5] [6] [7] [8] [9] [10].
• Added helper functions for building URIs in internal/helpers/uri.go.

Minor Fixes:

• Fixed import statement formatting in internal/api/request.go.
• Fixed a bug in internal/api/client.go to handle empty response bodies.

These changes collectively enhance the functionality and maintainability of the codebase by introducing new features and improving existing code.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 72.91221% with 253 lines in your changes missing coverage. Please review.

Project coverage is 73.78%. Comparing base (a2344f2) to head (20d4ea4). Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...nternal/services/environment_group_rule_set/dto.go	78.70%	73 Missing and 32 partials :warning:
...up_rule_set/resource_environment_group_rule_set.go	72.46%	75 Missing and 12 partials :warning:
...t_group_rule_set/api_environment_group_rule_set.go	52.57%	38 Missing and 8 partials :warning:
internal/helpers/uri.go	0.00%	12 Missing :warning:
internal/services/connection/api_connection.go	77.77%	2 Missing :warning:
internal/api/client.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #501 +/- ## ========================================== - Coverage 73.90% 73.78% -0.13% ========================================== Files 98 102 +4 Lines 13521 14434 +913 ========================================== + Hits 9993 10650 +657 - Misses 2921 3123 +202 - Partials 607 661 +54 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.