Add bat -h v0.22.1 to tests

Because that's the regression test for cmd-help in the bat project. If
this changes, we have to manually update it on that project. So let's
keep track of it.

tests/source/bat-short-0.22.1.txt

@@ -0,0 +1,43 @@
+bat 0.22.1
+A cat(1) clone with wings.
+
+Use '--help' instead of '-h' to see a more detailed version of the help text.
+
+USAGE:
+    bat [OPTIONS] [FILE]...
+    bat <SUBCOMMAND>
+
+ARGS:
+    <FILE>...    File(s) to print / concatenate. Use '-' for standard input.
+
+OPTIONS:
+    -A, --show-all                    Show non-printable characters (space, tab, newline, ..).
+    -p, --plain                       Show plain style (alias for '--style=plain').
+    -l, --language <language>         Set the language for syntax highlighting.
+    -H, --highlight-line <N:M>        Highlight lines N through M.
+        --file-name <name>            Specify the name to display for a file.
+    -d, --diff                        Only show lines that have been added/removed/modified.
+        --tabs <T>                    Set the tab width to T spaces.
+        --wrap <mode>                 Specify the text-wrapping mode (*auto*, never, character).
+    -n, --number                      Show line numbers (alias for '--style=numbers').
+        --color <when>                When to use colors (*auto*, never, always).
+        --italic-text <when>          Use italics in output (always, *never*)
+        --decorations <when>          When to show the decorations (*auto*, never, always).
+        --paging <when>               Specify when to use the pager, or use `-P` to disable (*auto*,
+                                      never, always).
+    -m, --map-syntax <glob:syntax>    Use the specified syntax for files matching the glob pattern
+                                      ('*.cpp:C++').
+        --theme <theme>               Set the color theme for syntax highlighting.
+        --list-themes                 Display all supported highlighting themes.
+        --style <components>          Comma-separated list of style elements to display (*default*,
+                                      auto, full, plain, changes, header, header-filename,
+                                      header-filesize, grid, rule, numbers, snip).
+    -r, --line-range <N:M>            Only print the lines from N to M.
+    -L, --list-languages              Display all supported languages.
+    -h, --help                        Print this help message.
+    -V, --version                     Print version information
+
+SUBCOMMANDS:
+    cache    Modify the syntax-definition and theme cache
+
+Note: `bat -h` prints a short and concise overview while `bat --help` gives all details.