skins: add Tokyo Night truecolor skin

[eugenefvdm]

Summary

Adds a Tokyo Night skin for Midnight Commander using truecolor (#rrggbb) values.

Tokyo Night is a widely-used dark color scheme originally created by enkia for VS Code. It has since been ported to many editors and terminal tools. This skin brings the same palette to mc.

Color palette used

Role	Color
Background	#1a1b26
Foreground	#a9b1d6
Accent blue	#7aa2f7
Accent cyan	#0db9d7
Yellow	#e0af68
Green	#9ece6a
Red	#f7768e
Purple	#bb9af7
Comment	#444b6a

Requirements

A truecolor-capable terminal emulator. The skin sets truecolors = true in its [skin] header per the convention described in misc/skins/README.txt.

Test plan

• Load skin with mc -S tokyo-night-16M
• Verify panels, dialogs, editor, viewer and diffviewer all render correctly
• Confirm on a non-truecolor terminal that mc falls back gracefully

[zyv]

I checked the skin in the skin editor and I find it very weird that it doesn't have any borders. I've had a look at the linked repository and I think that nothing in this style precludes traditional borders of mc, as the gutters, tab separators and such in VS Code are clearly visible. Could you please adjust that?

Also, on a technical note, please use color aliases like in the other 16M skins. You made a table for the PR description, which is nice. However, it's impossible to decode the hex values in the head when looking at the file, which makes the skin unmaintainable.

Finally, for some reason, hardlink isn't styled.

[zyv]

I checked the skin in the skin editor and I find it very weird that it doesn't have any borders. I've had a look at the linked repository and I think that nothing in this style precludes traditional borders of mc, as the gutters, tab separators and such in VS Code are clearly visible. Could you please adjust that?

Oh, I understand why the lines are missing (in the skin editor). You fall back on the default lines. Please complete the sections [lines] and [widget-*], for example, from other 256 or 16M skins.

In general, I think the colors are pretty well chosen, especially compared to the previous submission.

The only part that bothers me is the toxic / acidic error message dialog. Could you please adjust this?

[eugenefvdm]

Hi there @zyv,

Thank you so much for your feedback. Please have a look now:

[zyv]

Thanks, I'm of the opinion that it now looks really nice, both technically and artistically! Finally, our first user-contributed 16M skin 🎉

The only thing to do now, I think, is you have forgotten to add it to Makefile.am, so it won't actually get shipped and installed otherwise.

I'll merge this as soon as master gets unblocked.

[zyv]

Thank you for your contribution!