feat(api): add List Strings on Workflow Step method

This commit implements API endpoint to list strings on workflow steps with full test coverage:

Add list_workflow_step_strings method with query parameters support
Implement path helper get_workflow_step_strings_path
Add parameterized tests covering basic usage, full parameters and edge cases
Add mock tests for API request validation
Ensure all test cases follow existing patterns in the codebase
Follow Crowdin Enterprise API specification

Closes #184

Author: imprvhub

crowdin_api/api_resources/workflows/resource.py

@@ -37,6 +37,7 @@ def list_workflow_steps(self, projectId: Optional[int] = None):
         Link to documentation:
         https://developer.crowdin.com/enterprise/api/v2/#operation/api.projects.workflow-steps.getMany
         """
+        
         projectId = projectId or self.get_project_id()
 
         return self._get_entire_data(
@@ -70,6 +71,7 @@ def list_workflow_templates(
         Link to documentation:
         https://developer.crowdin.com/enterprise/api/v2/#operation/api.workflow-templates.getMany
         """
+        
         params = {"groupId": groupId}
         params.update(self.get_page_params(offset=offset, limit=limit))
 
@@ -86,6 +88,7 @@ def get_workflow_template(self, templateId: int):
         Link to documentation:
         https://developer.crowdin.com/enterprise/api/v2/#operation/api.workflow-templates.get
         """
+        
         return self.requester.request(
             method="get",
             path=self.get_workflow_templates_path(templateId=templateId),