feat(api): API tokens for authentication

Create and managed simple API tokens for access to the API from external
tools.

src/auth/dto/create-api-token-request.dto.ts

@@ -0,0 +1,9 @@
+import { ApiProperty } from "@nestjs/swagger";
+
+export class CreateApiTokenRequestDto {
+  @ApiProperty({
+    description: "Opaque text field to identify the API token",
+    example: "My super duper token",
+  })
+  description: string;
+}