feat(core): Make queue mode settings configurable (#7526)

This PR allows users to configure the settings to Bull, possibly
reducing the errors with `maxStalledCount` and other issues, that
usually happen either when a worker crashes or when the event loop is
super busy. Increasing the lease time and the `maxStalledCount` settings
might improve UX.

Github issue / Community forum post (link here to close automatically):

packages/cli/src/config/schema.ts

@@ -438,6 +438,32 @@ export const schema = {
 				default: 30,
 				env: 'QUEUE_WORKER_TIMEOUT',
 			},
+			settings: {
+				lockDuration: {
+					doc: 'How long (ms) is the lease period for a worker to work on a message',
+					format: Number,
+					default: 30000,
+					env: 'QUEUE_WORKER_LOCK_DURATION',
+				},
+				lockRenewTime: {
+					doc: 'How frequently (ms) should a worker renew the lease time',
+					format: Number,
+					default: 15000,
+					env: 'QUEUE_WORKER_LOCK_RENEW_TIME',
+				},
+				stalledInterval: {
+					doc: 'How often check for stalled jobs (use 0 for never checking)',
+					format: Number,
+					default: 30000,
+					env: 'QUEUE_WORKER_STALLED_INTERVAL',
+				},
+				maxStalledCount: {
+					doc: 'Max amount of times a stalled job will be re-processed',
+					format: Number,
+					default: 1,
+					env: 'QUEUE_WORKER_MAX_STALLED_COUNT',
+				},
+			},
 		},
 	},