Add contains possibility for listdocuments

[akram-95]

I want to check if a word comes in a text but I couldn't do that with actual filters functions
Can you please implement that ?

[lohanidamodar]

@akram-95 I'm not sure I understand. Please describe more in details with examples and use cases. And most suitable place for this would be Appwrite github discussions so please continue there.
Thank you