trim PR title when too large for terminal in gm gh pr checkout (#129)

`input list` has trouble
- scrolling when one line is too large
- treating ANSI sequences (they match, e.g the `m` in `\0[m`)

this PR computes custom lines that are trimmed to the size of the
terminal and don't use ANSI coloring 🤔

## test it
- run
```nushell
tk run --interactive --sugar ["github"]
```
- go to a directory with remote PR, e.g. `nushell/nushell`
- run
```nushell
gm gh pr checkout
```

src/nu-git-manager-sugar/github.nu

@@ -233,11 +233,32 @@ export def "gm gh pr checkout" [] {
         return
     }
 
+    # NOTE: `input list` has trouble with large inputs...
+    # this part of the command makes sure each line fits in the terminal width nicely.
+    #
+    # related to https://github.com/nushell/nushell/issues/11245
+    let width = $prs
+        | each { {
+            author: ($in.author | str length),
+            id: ($in.id | into string | str length),
+            title: ($in.title | str length),
+        }}
+        | math max
+    let prs = $prs
+        | update author { fill --alignment right --character ' ' --width $width.author }
+        | update id { fill --alignment right --character ' ' --width $width.id }
+        | update title { fill --alignment left --character ' ' --width $width.title }
+        | each {
+            $"($in.author) \(($in.id)\): ($in.title)" | str substring ..((term size).columns - 2)
+        }
+
     let res = $prs | input list --fuzzy
     if $res == null {
         log info "user chose to exit"
         return
     }
 
-    ^gh pr checkout $res.id
+    ^gh pr checkout (
+        $res | ansi strip | parse "{author} ({number}): {title}" | into record | get number
+    )
 }