clickable filenames

[Lokathor]

if the filenames of error sources had spaces around where they're shown in the square brackets, they'd be clickable in various smart terminals.

current

Error: Token Tree Building
   ╭─[samples/tree_error.txt:1:38]
 1 │example token { tree file } ( words
   │                                     ╰ Expected: ["token_tree", "close_paren"], Found: None

wanted

Error: Token Tree Building
   ╭─[ samples/tree_error.txt:1:38 ]
 1 │example token { tree file } ( words
   │                                     ╰ Expected: ["token_tree", "close_paren"], Found: None

[zesterer]

This has now been implemented and will be in the next release.