fish: rename tmux helper functions

nix/homeModules/common/fish/functions/tmux-home.fish

@@ -0,0 +1,19 @@
+function tmux-home \
+    --description "Take me back to ~"
+
+    set session_name home
+
+    if pgrep tmux 2>&1 >/dev/null
+        __tmux-register-session
+    end
+
+    if pgrep tmux 2>&1 >/dev/null; or ! tmux has -t=$session_name 2>/dev/null
+        tmux \
+            new-session -ds home \; \
+            new-window -t home \; \
+            select-window -t "home":1
+    end
+
+    __tmux-attach-or-switch $session_name
+
+end