Add Run Tasks entitlement for Organizations

This commit adds the beta API changes for the Run Tasks
entitlement as per RFC TF-479:
* Add run-tasks to Organization entitlement set

This commit also adds tests for this beta feature.

organization.go

@@ -94,6 +94,7 @@ type Entitlements struct {
 	CostEstimation        bool   `jsonapi:"attr,cost-estimation"`
 	Operations            bool   `jsonapi:"attr,operations"`
 	PrivateModuleRegistry bool   `jsonapi:"attr,private-module-registry"`
+	RunTasks              bool   `jsonapi:"attr,run-tasks"`
 	SSO                   bool   `jsonapi:"attr,sso"`
 	Sentinel              bool   `jsonapi:"attr,sentinel"`
 	StateStorage          bool   `jsonapi:"attr,state-storage"`

organization_integration_test.go

@@ -482,3 +482,23 @@ func TestOrganizationsReadRunTasksPermission(t *testing.T) {
 		})
 	})
 }
+
+func TestOrganizationsReadRunTasksEntitlement(t *testing.T) {
+	skipIfEnterprise(t)
+	skipIfFreeOnly(t)
+	skipIfBeta(t)
+
+	client := testClient(t)
+	ctx := context.Background()
+
+	orgTest, orgTestCleanup := createOrganization(t, client)
+	defer orgTestCleanup()
+
+	t.Run("when the org exists", func(t *testing.T) {
+		entitlements, err := client.Organizations.ReadEntitlements(ctx, orgTest.Name)
+		require.NoError(t, err)
+
+		assert.NotEmpty(t, entitlements.ID)
+		assert.True(t, entitlements.RunTasks)
+	})
+}