organize all shell scripts into logical dirs

.config/shell/zshrc.d/5-install-tmux-plugin-manager.zsh

@@ -0,0 +1,20 @@
+# Clone tmux plugin manager if not existing
+if [[ -z "$TPM_PARENT_DIR" ]]; then
+  TPM_PARENT_DIR=${XDG_CONFIG_HOME:-$HOME/.config}/tmux
+fi
+
+if [[ ! -f $TPM_PARENT_DIR/plugins/tpm/tpm ]]; then
+  if [[ ! -d "$TPM_PARENT_DIR" ]]; then
+    mkdir -p "$TPM_PARENT_DIR"
+  fi
+  pushd $TPM_PARENT_DIR
+  git clone https://github.com/tmux-plugins/tpm plugins/tpm
+  popd
+fi
+
+export TMUX_PLUGIN_MANAGER_PATH=$TPM_PARENT_DIR/plugins
+alias tmux="tmux -f ${TPM_PARENT_DIR}/tmux.conf"
+
+unset TPM_PARENT_DIR
+unset TPM_SUB_DIR
+