Updated TGWUI Remote Extension

Updates:
- Fully re-worked
- Behaves as both a remote extension & the TGWUI code for script.py to import
- Added RVC pitch support
- Config will be central OR JSON file depending how the script is run/imported

system/TGWUI_Extension/AT TGWUI Remote Instructions.txt

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+Text-generation-webui remote extension for AllTalk! 
+
+This folder contains everything you need to set up a Text-generation-webui extension that can communicate with an AllTalk server remotely.
+
+To get started, follow these simple steps:
+
+1) In your Text-generation-webui's extensions folder, create a new folder and name it "alltalk_tts".
+2) Take all the files from this current folder and copy them into the newly created "alltalk_tts" folder.
+3) Start & Open Text-generation-webui and look for "alltalk_tts" in the list of extensions. Select alltalk_tts, save your settings and restart Text-generation-webui.
+4) Text-generation-webui will restart and load the AllTalk extension. You may see an error/warning as the extension will not yet have the IP address details of your remote AllTalk server.
+5) In the extension settings, enter the correct IP address and port of your AllTalk server. If your AllTalk server is running on a remote machine accessed through a secure tunnel, make sure to use "https" instead of "http".
+6) After entering the server details, click on the "Refresh settings & voices" button. If the settings are correct, the extension will download all the available settings from the AllTalk server.
+7) The first time you successfully generate speech using the extension, the settings will be automatically saved to a local configuration file.
+
+Please note that if the AllTalk server you're connected to doesn't support certain settings/features, those options will be greyed out and unavailable in the extension.
+
+Please use the "Refresh settings & voices" button to make sure the extension is in sync with your AllTalk server.