[redux-devtools-inspector]: filter - use '!' to negate query

[adekbadek]

The problem:
When using the devtools, I missed the functionality to filter by not matching query, e.g. to just show actions which are not of certain type, to reduce clutter when debugging.

The solution:
This initial implementation proposes ! prefix as a way to negate a query. So !ADD would filter out any actions that contain the word ADD in their type.

Problem with the solution
The only drawbacks I see now are:

1. discoverability - this would of course be documented, but maybe a button would be a better solution from a UX perspective?
2. actions with ! as first character of type. This is probably a super edge-case, but maybe that would be a problem for someone.

Let me know what you think, I'd be happy to work more on that feature (docs, tests, etc)!

[adekbadek]

Hi @zalmoxisus , did you get a chance to look at this?