[FEATURE] Regex Replace in Workflow Search

**Is your feature request related to a problem? Please describe.**
Currently, workflow search only allows replace all, and only for plain text searches.

**Describe the solution you'd like**
Would like to be able to use regex and have find, next, previous, replace and replace all options, instead of just replace all.

**Do you have a workaround?**
If I REALLY need a regex, such as when I want to use capture group replacement, no, there is no workaround.

**Comparable features in other tools?**
Most other development UIs have full regex search throughout, such as Visual Studio Code. Also, search & replace does this well in code editing in steps (at least the ones I've worked with).

**Additional context**
None.