Associate . pyromod files on Mac Os

[Stan]

Currently .pyromod files are not associated with 0ad on Mac.

We should create or edit the plist of the game to associate them to make it easier for users that do not have Tls enabled.

[Stan]

Example here.

​https://github.com/edingc/mac-app-defaults/blob/master/set-defaults.sh

[Vladislav Belov]

I've already posted few links in gitlab, how to done this (sometimes we don't need plists):

• ​https://developer.apple.com/library/content/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html#//apple_ref/doc/uid/TP40009249-101685-TPXREF107
• ​https://github.com/atom/atom/blob/d6d47c422c07b71421471720f7d96b52890feeb0/resources/mac/atom-Info.plist#L745-L761
• ​https://github.com/atom/atom/blob/d6d47c422c07b71421471720f7d96b52890feeb0/src/browser/squirrel-update.coffee#L90-L92

[Imarok]

Move tickets to their correct component.

[Stan]

This might be of use ​https://superuser.com/questions/273756/how-to-change-default-app-for-all-files-of-particular-file-type-through-terminal

[wraitii]

In 24377:

Associate .zip and .pyromod files with 0 A.D. on MacOS

• Change the .Plist to associate 0 A.D. with .pyromod files (as owner, so the default choice), and .zip (as alternate, so not the default, but will appaer in the 'open with' dropdown).
• Make 0 A.D. actually load mods opened like that on MacOS. The files aren't actually opened with command line arguments, but via Cocoa stuff, which SDL2 handles via the 'DropEvent' event. This ought also work on windows and linux.

Closes #5357

Differential Revision: ​https://code.wildfiregames.com/D3190