New command: simple-call-tree-apply-command

Rewrite other commands to utilize simple-call-tree-apply-command.
Add new keybinding and menu item.

Altered items:
simple-call-tree-mode, simple-call-tree-apply-command,
simple-call-tree-query-replace, simple-call-tree-query-replace-regexp,
simple-call-tree-bookmark, simple-call-tree-eval-defun, not