Add shared bat dotfiles and cache refresh task

dotfiles/common/.config/bat/.config/bat/config

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+# This is `bat`s configuration file. Each line either contains a comment or
+# a command-line option that you want to pass to `bat` by default. You can
+# run `bat --help` to get a list of all possible configuration options.
+
+# Specify desired highlighting theme (e.g. "TwoDark"). Run `bat --list-themes`
+# for a list of all available themes
+
+# Theme
+--theme="Coldark-Dark"
+
+# Style
+--style="header,changes,numbers"
+
+# Enable this to use italic text on the terminal. This is not supported on all
+# terminal emulators (like tmux, by default):
+--italic-text=always
+
+# Uncomment the following line to disable automatic paging:
+--paging=auto
+
+# Uncomment the following line if you are using less version >= 551 and want to
+# enable mouse scrolling support in `bat` when running inside tmux. This might
+# disable text selection, unless you press shift.
+--pager="less --RAW-CONTROL-CHARS --quit-if-one-screen --mouse"
+
+# Syntax mappings: map a certain filename pattern to a language.
+#   Example 1: use the C++ syntax for Arduino .ino files
+#   Example 2: Use ".gitignore"-style highlighting for ".ignore" files
+--map-syntax "*.ino:C++"
+--map-syntax ".ignore:Git Ignore"