feat: tmux stuff

config/tmux/plugins/tpm/docs/changing_plugins_install_dir.md

@@ -0,0 +1,16 @@
+# Changing plugins install dir
+
+By default, TPM installs plugins in a subfolder named `plugins/` inside
+`$XDG_CONFIG_HOME/tmux/` if a `tmux.conf` file was found at that location, or
+inside `~/.tmux/` otherwise.
+
+You can change the install path by putting this in `.tmux.conf`:
+
+    set-environment -g TMUX_PLUGIN_MANAGER_PATH '/some/other/path/'
+
+Tmux plugin manager initialization in `.tmux.conf` should also be updated:
+
+    # initializes TMUX plugin manager in a new path
+    run /some/other/path/tpm/tpm
+
+Please make sure that the `run` line is at the very bottom of `.tmux.conf`.