gitignore: ignore fleet dotfiles

Signed-off-by: SirRGB <sirrgb@proton.me>

Author: SirRGB

.gitignore

@@ -104,10 +104,13 @@ Control.ca-bundle
 Control.system-ca-bundle
 GitHub.sublime-settings
 
-# Visual Studio Code #
+# Visual Studio Code
 .vscode/*
 !.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
 .history
+
+# Fleet
+.fleet