caret: Add V binding in normal mode

See #5264

doc/help/settings.asciidoc

@@ -591,6 +591,7 @@ Default:
 * +pass:[Sq]+: +pass:[open qute://bookmarks]+
 * +pass:[Ss]+: +pass:[open qute://settings]+
 * +pass:[T]+: +pass:[tab-focus]+
+* +pass:[V]+: +pass:[enter-mode caret ;; toggle-selection --line]+
 * +pass:[ZQ]+: +pass:[quit]+
 * +pass:[ZZ]+: +pass:[quit --save]+
 * +pass:[[[]+: +pass:[navigate prev]+

qutebrowser/config/configdata.yml

@@ -2901,6 +2901,7 @@ bindings.default:
       N: search-prev
       i: enter-mode insert
       v: enter-mode caret
+      V: enter-mode caret ;; toggle-selection --line
       "`": enter-mode set_mark
       "'": enter-mode jump_mark
       yy: yank