Added nested directory daily_update/ inside app/workers/ for autoloading.

[shashwatkathuria]

What this PR does

In my development environment, I was getting NameErrors relating to each worker inside app/workers/daily_update on running rails batch:update_daily. They were not getting autoloaded as they were inside the nested directory. The difference can be seen using the command puts ActiveSupport::Dependencies.autoload_paths. Added * to include all nested directories in future also.
Putting the error log of one such worker here:

2020-07-28T20:06:33.927Z pid=21034 tid=gssgzvuli WARN: {"context":"Job raised exception","job":{"retry":true,"queue":"daily_update","unique":"until_executed","args":[],"class":"FindAssignmentsWorker","jid":"0c658b29197a28457ea2eab8","created_at":1595966792.626286,"lock_timeout":0,"lock_expiration":null,"unique_prefix":"uniquejobs","unique_args":[],"unique_digest":"uniquejobs:9d48b6d34fb898e86b684045aa6f072a","newrelic":{},"enqueued_at":1595966792.6272924},"jobstr":"{\"retry\":true,\"queue\":\"daily_update\",\"unique\":\"until_executed\",\"args\":[],\"class\":\"FindAssignmentsWorker\",\"jid\":\"0c658b29197a28457ea2eab8\",\"created_at\":1595966792.626286,\"lock_timeout\":0,\"lock_expiration\":null,\"unique_prefix\":\"uniquejobs\",\"unique_args\":[],\"unique_digest\":\"uniquejobs:9d48b6d34fb898e86b684045aa6f072a\",\"newrelic\":{},\"enqueued_at\":1595966792.6272924}"}
2020-07-28T20:06:33.927Z pid=21034 tid=gssgzvuli WARN: NameError: uninitialized constant FindAssignmentsWorker

Screenshots

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After