Upgrade to v1.5

Added:
- new documentation
- demo in the documentation
- extra API endpoints (yet to be documented)
- voice notification on change of model or setting
- DeepSpeed update to v11.x and re-documented
- improved vocab bringing the XTTSv2 model closer to sounding like the sample, with improved pronunciation and intonation.

Deepspeed-Windows/DeepSpeed readme.txt

@@ -0,0 +1,18 @@
+These are the modified files you would need for a MANUAL build of DeepSpeed 11.1 or 11.2.
+
+They were created by a mix of instructions from erew123 and S95Sedan.
+
+
+- You still have to download the DeepSpeed v11.1 or v11.2 installation files from Microsoft to use these files.
+
+https://github.com/microsoft/DeepSpeed/releases/tag/v0.11.2
+
+
+- These files were provided by S95Sedan here: 
+
+https://github.com/S95Sedan/Deepspeed-Windows
+
+
+- They are related to the manual build of DeepSpeed for AllTalk, which is linked here: 
+
+https://github.com/erew123/alltalk_tts/tree/main?tab=readme-ov-file#-option-2---a-bit-more-complicated