Add better mouse plugin to tmux to adjust sensitive scrolling

.tmux/plugins/tmux-better-mouse-mode/scripts/helpers.sh

@@ -0,0 +1,15 @@
+get_tmux_option() {
+  local option="$1"
+  local default_value="$2"
+  local option_value=$(tmux show-option -gqv "$option")
+  if [ -z "$option_value" ]; then
+    echo "$default_value"
+  else
+    echo "$option_value"
+  fi
+}
+
+get_tmux_version() {
+  tmux -V | cut -d " " -f 2
+}
+