[native] Separate redux-devtools out

Summary:
After this diff, redux-devtools runs similar to react-devtools: as a separate standalone yarn command.

Other changes:

1. Updated our version of @redux-devtools/cli
2. Silenced console errors when redux-devtools isn't open
3. Added the --open flag so the user doesn't have to separately open the redux-devtools app on their own
4. Updated docs

Test Plan:

1. Ran Redux dev tools in a variety of scenarios, including having a separate physical device connect to it
2. Ran the app without Redux dev tools to make sure it doesn't crash or spew too many errors

Reviewers: bartek, jon

Reviewed By: bartek

Subscribers: tomek, atul

Differential Revision: https://phab.comm.dev/D5976