Feature request: Make a custom data field searchable

[idolaru]

Business scenario, we have created a Custom Doctype named "Guests" with 7 fields:

1. Name
2. Height
3. Weight
4. Shoe size
5. Cert. Level
6. No. dives
7. Last dive

The "Guests" doctype is added using the Table field inside the Event Doctype. Users will be adding the data from inside the Event Doctype, every time.

The data field "Name" is searchable inside the table to be able to search for previously added guest data from older events.