Bring inspector window to front when Firefox gets focus

[decembre56]

@jdescottes

One trick that can be helpful to know: if you press a DevTools toggle keyboard shortcut (eg F12) on a tab which is linked to a “separated” DevTools window, it will automatically bring the DevTools window to the front.

I post another request about this irritating problem (maybe there is a solution now…):
Keep the same Dev Tools window to inspect different tabs or windows (don’t open multiple Dev Tools windows)