feat: start a project from another one's configuration

Creating a project can name one the creator owns or administers: its
statuses, transitions, types, areas, custom fields and automation rules
are copied once (paused rules stay paused; rules assigning to someone who
is not in the new project are left out). GraphQL templateProjectId, REST
template (id or key), MCP create_project template, and a select in the
web's new-project form.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/api/tracker/presenters/src/lib/http/dto/requests.dto.ts

@@ -87,10 +87,21 @@ export class CreateProjectDto {
   @IsOptional()
   @IsBoolean()
   isPublic?: boolean;
+
+  @ApiPropertyOptional({
+    type: String,
+    nullable: true,
+    example: 'API',
+    description:
+      'A project you own or administer (id or key) to start from: its statuses, transitions, types, areas, custom fields and automation rules are copied',
+  })
+  @IsOptional()
+  @IsString()
+  template?: string | null;
 }
 
 export class UpdateProjectDto extends PartialType(
-  OmitType(CreateProjectDto, ['key'] as const),
+  OmitType(CreateProjectDto, ['key', 'template'] as const),
 ) {
   @ApiPropertyOptional({
     description: