Update nnn to 3.4

Summary:
Summarized Changelog

• enhanced NNN_COLORS with xterm 256 colors support
• new color scheme with NNN_FCOLORS (file type specific colors)
• switch -C to force earlier color scheme (dirs follow context color)
• optimize archive extension matching on file open
• show location in context color
• support host[:dir] format for remote mounts
• clear selection after copy
• support traversal on file/dir creation
• show selection in reverse in status bar
• show status bar indicator H when hidden files are listed
• show and confirm archive command output
• support "cd on quit" in picker mode

Full changelog here

Test Plan:

• check version
• create, move, delete a test file

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D9470