Update 2.1, automatic plugin libraries installation

Added an automatic plugin installation for plugins, so the process of installing a plugin is just drag and drop without any terminal requirements (does not need to be programmed into the plugin). If the automatic library locator does not work, plugin_tools.py now includes two commands to help install libraries (must be programmed into the plugin). Also added, a command log for debugging purposes is built into the bot, which includes information on which bot and what command but no error log. This logging does not specify user ID or user server, and all messages that do not contain the prefix are ignored. A EULA agreement is now generated which must be agreed to. eb_launcher now automatically installs discordpy which is required to run. Stopping and restarting specific bots have now been added as to simplify development and testing purposes.