Regex Support in Filter

*Is your feature request related to a problem? Please describe.*

It would be great to have Regex operator in filter. Consider the following example where I have some strings:

`"A, A B, B, B C", "A", "A B, C"`

I want to get all the strings that have `A`, with expected result : `"A, A B, B, B C", "A"`.

If we use `contains`, because of wildcards (`'%A%'`), it will give `"A, A B, B, B C", "A", "A B, C"` which is incorrect. If I use regex, then I can get the result as I would like it.
Also, if you support regex, we can indirectly get support for array columns as well (convert array as comma-separated column)

*Describe the solution you'd like:*

It would be great, if we can have a `regex` filter, which sets the passed regex to the passed column with the values.

Example:
```json
{
"member": "COLUMN",
"operator": "regex",
"values": [""]
}
```

This would eventually be resolved as `where REGEXP_CONTAINS(COLUMN, 'REGEX_PATTERN')`

*Describe alternatives you've considered*

Query through cube, to get all the column value, filter it after getting the resultset. But this approach, looses the cube (for logic purposes).