feat: add support for Issue Types API

- Implement functions to interact with the Issue Types API:
  - ListIssueTypes: Retrieve all issue types for an organization.
  - CreateIssueType: Add a new issue type to an organization.
  - UpdateIssueType: Modify an existing issue type.
  - DeleteIssueType: Remove an issue type from an organization.

- Add corresponding tests for each function to ensure reliability.

References:
- GitHub REST API documentation: https://docs.github.com/en/rest/orgs/issue-types
- Related issue: #3523

Signed-off-by: atilsensalduz <[email protected]>

github/orgs_issue_types.go

@@ -12,8 +12,8 @@ import (
 
 // CreateOrUpdateIssueTypesOptions represents the parameters for creating or updating an issue type.
 type CreateOrUpdateIssueTypesOptions struct {
-	Name        *string `json:"name"`                  // Name of the issue type. (Required.)
-	IsEnabled   *bool   `json:"is_enabled"`            // Whether or not the issue type is enabled at the organization level. (Required.)
+	Name        string  `json:"name"`                  // Name of the issue type. (Required.)
+	IsEnabled   bool    `json:"is_enabled"`            // Whether or not the issue type is enabled at the organization level. (Required.)
 	IsPrivate   *bool   `json:"is_private,omitempty"`  // Whether or not the issue type is restricted to issues in private repositories. (Optional.)
 	Description *string `json:"description,omitempty"` // Description of the issue type. (Optional.)
 	Color       *string `json:"color,omitempty"`       // Color for the issue type. Can be one of "gray", "blue", green "orange", "red", "pink", "purple", "null". (Optional.)

github/orgs_issue_types_test.go

@@ -89,9 +89,9 @@ func TestOrganizationsService_CreateIssueType(t *testing.T) {
 	client, mux, _ := setup(t)
 
 	input := &CreateOrUpdateIssueTypesOptions{
-		Name:        Ptr("Epic"),
+		Name:        "Epic",
 		Description: Ptr("An issue type for a multi-week tracking of work"),
-		IsEnabled:   Ptr(true),
+		IsEnabled:   true,
 		Color:       Ptr("green"),
 		IsPrivate:   Ptr(true),
 	}
@@ -153,9 +153,9 @@ func TestOrganizationsService_UpdateIssueType(t *testing.T) {
 	client, mux, _ := setup(t)
 
 	input := &CreateOrUpdateIssueTypesOptions{
-		Name:        Ptr("Epic"),
+		Name:        "Epic",
 		Description: Ptr("An issue type for a multi-week tracking of work"),
-		IsEnabled:   Ptr(true),
+		IsEnabled:   true,
 		Color:       Ptr("green"),
 		IsPrivate:   Ptr(true),
 	}