fix(core): Add optional context parameter to track creation source for workflows, credentials, and projects (#18736)

Co-authored-by: r00gm <raul00gm@gmail.com>

packages/@n8n/api-types/src/dto/credentials/create-credential.dto.ts

@@ -6,4 +6,5 @@ export class CreateCredentialDto extends Z.class({
 	type: z.string().min(1).max(128),
 	data: z.record(z.string(), z.unknown()),
 	projectId: z.string().optional(),
+	uiContext: z.string().optional(),
 }) {}

packages/@n8n/api-types/src/dto/project/create-project.dto.ts

@@ -1,3 +1,4 @@
+import { z } from 'zod';
 import { Z } from 'zod-class';
 
 import { projectIconSchema, projectNameSchema } from '../../schemas/project.schema';
@@ -5,4 +6,5 @@ import { projectIconSchema, projectNameSchema } from '../../schemas/project.sche
 export class CreateProjectDto extends Z.class({
 	name: projectNameSchema,
 	icon: projectIconSchema.optional(),
+	uiContext: z.string().optional(),
 }) {}