Support regex filters

[lmuhlha]

Datasource is missing support for regex filtering in Heroic:
https://spotify.github.io/heroic/docs/query_language

[dmichel1]

I had an internal user reach out to me today about wanting to use this feature.

[ryanvazquez]

Do values have to be formatted as Regex strings (i.e /something/)?

[coutouly]

is this bug fixed ?
may we use the regex ?
thanks