feat: scheduling jobs (#12863)

Adds a new `schedule` property to workflow and task configs that can be
used to have Payload automatically _queue_ jobs following a certain
_schedule_.

Docs:
https://payloadcms.com/docs/dynamic/jobs-queue/schedules?branch=feat/schedule-jobs

## API Example

```ts
export default buildConfig({
  // ...
  jobs: {
    // ...
    scheduler: 'manual', // Or `cron` if you're not using serverless. If `manual` is used, then user needs to set up running /api/payload-jobs/handleSchedules or payload.jobs.handleSchedules in regular intervals
    tasks: [
      {
        schedule: [
          {
            cron: '* * * * * *',
            queue: 'autorunSecond',
            // Hooks are optional
            hooks: {
              // Not an array, as providing and calling `defaultBeforeSchedule` would be more error-prone if this was an array
              beforeSchedule: async (args) => {
                // Handles verifying that there are no jobs already scheduled or processing.
                // You can override this behavior by not calling defaultBeforeSchedule, e.g. if you wanted
                // to allow a maximum of 3 scheduled jobs in the queue instead of 1, or add any additional conditions
                const result = await args.defaultBeforeSchedule(args)
                return {
                  ...result,
                  input: {
                    message: 'This task runs every second',
                  },
                }
              },
              afterSchedule: async (args) => {
                await args.defaultAfterSchedule(args) // Handles updating the payload-jobs-stats global
                args.req.payload.logger.info(
                  'EverySecond task scheduled: ' +
                  (args.status === 'success' ? args.job.id : 'skipped or failed to schedule'),
                )
              },
            },
          },
        ],
        slug: 'EverySecond',
        inputSchema: [
          {
            name: 'message',
            type: 'text',
            required: true,
          },
        ],
        handler: ({ input, req }) => {
          req.payload.logger.info(input.message)
          return {
            output: {},
          }
        },
      }
    ]
  }
})
```

---
- To see the specific tasks where the Asana app for GitHub is being
used, see below:
  - https://app.asana.com/0/0/1210495300843759

test/runInit.ts

@@ -4,6 +4,7 @@ export async function runInit(
   testSuiteArg: string,
   writeDBAdapter: boolean,
   skipGenImportMap: boolean = false,
+  configFile?: string,
 ): Promise<void> {
-  await initDevAndTest(testSuiteArg, String(writeDBAdapter), String(skipGenImportMap))
+  await initDevAndTest(testSuiteArg, String(writeDBAdapter), String(skipGenImportMap), configFile)
 }