Add Electron Archive Format type application/x-asar

Formerly known as "Atom Shell Archive Format" [1].

Unofficial MIME type also used by NPM "file-type" library [2].

[1] https://github.com/electron/asar
[2] https://github.com/sindresorhus/file-type/blob/main/core.d.ts#L274
1 job for asar in 1 minute and 25 seconds (queued for 2 seconds)