Add fish config

.config/fish/config.fish

@@ -0,0 +1,35 @@
+# Environment variables
+set -p PATH "$HOME/.cargo/bin"
+
+if status is-interactive
+    # Interactive environment variables
+    set -x EDITOR /usr/bin/nvim
+
+    # Setup
+    ## McFly
+    set -gx MCFLY_KEY_SCHEME vim
+    set -gx MCFLY_FUZZY 1
+    set -gx MCFLY_RESULTS 25
+    set -gx MCFLY_INTERFACE_VIEW BOTTOM
+    set -gx MCFLY_RESULTS_SORT LAST_RUN
+    set -gx MCFLY_HISTORY_LIMIT 10000
+    mcfly init fish | source
+
+    # Disable greeting
+    set -g fish_greeting
+
+    # Abbreviations
+    ## Replacements
+    abbr -a -g rm trash
+
+    ## Safety options
+    abbr -a -g cp "cp -i"
+    abbr -a -g mv "mv -i"
+    abbr -a -g rmi "rm -i"
+
+    # Functions
+    ## Replacements
+    function cat -w bat
+        bat $argv
+    end
+end