Added all api functionality for organization membership and done some…

[aayushsingh2502]

Organization Membership functionalities implemented:

Create: Invite users to organizations via email with optional team assignments
List: Retrieve all organization memberships with flexible filtering and pagination
Read: Fetch individual membership details with relationship includes
Delete: Remove organization memberships

Note: Code cleanup done for comments mentioned in various files

Output from manul testing:

Testing Organization Membership List for: aayush-test
======================================================================

[Test 1] List all organization memberships:
    aayushsingh2512@gmail.com (ID: ou-fm7t9..., Status: active)
    sivaselvan.i@hashicorp.com (ID: ou-wQ23k..., Status: invited)
[OrganizationMembership(id='ou-fm7t92nqFwrDAqFv', status=<OrganizationMembershipStatus.ACTIVE: 'active'>, email='aayushsingh2512@gmail.com', organization=Organization(name=None, assessments_enforced=None, collaborator_auth_policy=None, cost_estimation_enabled=None, created_at=None, default_execution_mode=None, email=None, external_id=None, id='aayush-test', is_unified=None, owners_team_saml_role_id=None, permissions=None, saml_enabled=None, session_remember=None, session_timeout=None, trial_expires_at=None, two_factor_conformant=None, send_passing_statuses_for_untriggered_speculative_plans=None, remaining_testable_count=None, speculative_plan_management_enabled=None, aggregated_commit_status_enabled=None, allow_force_delete_workspaces=None, default_project=None, default_agent_pool=None, data_retention_policy=None, data_retention_policy_choice=None), user=User(id='user-CPS5eGKT5CQWuKkV', avatar_url='', email='', is_service_account=False, two_factor={}, unconfirmed_email='', username='', v2_only=False, is_site_admin=False, is_admin=False, is_sso_login=False, permissions={}), teams=[Team(id='team-dx24FR9xQUuwNTHA', name=None, is_unified=False, organization_access=None, visibility=None, permissions=None, user_count=0, sso_team_id=None, allow_member_token_management=False, users=None, organization_memberships=None)]), OrganizationMembership(id='ou-wQ23k4Bjsr4wt7Zh', status=<OrganizationMembershipStatus.INVITED: 'invited'>, email='sivaselvan.i@hashicorp.com', organization=Organization(name=None, assessments_enforced=None, collaborator_auth_policy=None, cost_estimation_enabled=None, created_at=None, default_execution_mode=None, email=None, external_id=None, id='aayush-test', is_unified=None, owners_team_saml_role_id=None, permissions=None, saml_enabled=None, session_remember=None, session_timeout=None, trial_expires_at=None, two_factor_conformant=None, send_passing_statuses_for_untriggered_speculative_plans=None, remaining_testable_count=None, speculative_plan_management_enabled=None, aggregated_commit_status_enabled=None, allow_force_delete_workspaces=None, default_project=None, default_agent_pool=None, data_retention_policy=None, data_retention_policy_choice=None), user=User(id='user-7o6ap6fG55kSp7PG', avatar_url='', email='', is_service_account=False, two_factor={}, unconfirmed_email='', username='', v2_only=False, is_site_admin=False, is_admin=False, is_sso_login=False, permissions={}), teams=[Team(id='team-dx24FR9xQUuwNTHA', name=None, is_unified=False, organization_access=None, visibility=None, permissions=None, user_count=0, sso_team_id=None, allow_member_token_management=False, users=None, organization_memberships=None)])]
    Total memberships: 2
    Success: Retrieved 2 membership(s)

[Test 2] Iterate with custom page size (3 items per page):
    aayushsingh2512@gmail.com
    sivaselvan.i@hashicorp.com
    Processed 2 memberships (fetched in batches of 3)
    Success: Pagination working correctly

[Test 3] Iterate with user relationships included:
    aayushsingh2512@gmail.com (User ID: user-CPS5eGKT5CQWuKkV)
    sivaselvan.i@hashicorp.com (User ID: user-7o6ap6fG55kSp7PG)
    Processed 2 memberships, 2 with user data
    Success: Include parameter working

[Test 4] Filter by status (invited only):
    Found 1 invited membership(s)
    sivaselvan.i@hashicorp.com
    Success: Status filter working

[Test 5] Filter by specific email address:
   Testing with email: aayushsingh2512@gmail.com
    Found 1 matching membership(s)
    aayushsingh2512@gmail.com
    Success: Email filter working correctly

[Test 6] Search memberships by query string:
   Searching for: gmail.com
    Found 1 membership(s) matching query
    aayushsingh2512@gmail.com
    Success: Query filter working

[Test 7] Combined filters: active members with user & teams included:
    Found 1 active membership(s)
    aayushsingh2512@gmail.com (Teams: 1,  User)
    Success: Combined filters working

[Test 8] Read a specific organization membership:
   Reading membership ID: ou-fm7t92nqFwrDAqFv
    Email: aayushsingh2512@gmail.com
    Status: active
    ID: ou-fm7t92nqFwrDAqFv
    Success: Read membership successfully

[Test 9] Read membership with options (include user & teams):
   Reading membership ID: ou-fm7t92nqFwrDAqFv
    Email: aayushsingh2512@gmail.com
    Status: active
    User ID: user-CPS5eGKT5CQWuKkV
    Teams: 1
    Success: Read with options working

[Create Example] Add a new organization membership:
    Error: TFEError: User is already an organization member

[Delete Example] Delete an organization membership:
   Attempting to delete membership: ou-9mG77c6uE5GScg9k
   ✗ Membership not found: not found
   ℹ The membership may have already been deleted or the ID is invalid

Output of integretion test:

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