chatBot: Add support for non openai text generation models

[Axlfc]

Implement a solution when calling conversate.py or bot.py "if first or second argument is a matching language model".
By default is calling the model "gpt-3.5-turbo-0301" by openai.

This models are downloaded in ~/.cache/huggingface/hub

MODELS:

• (EleutherAI) GPT-Neo

Version	Disk Space
gpt-neo-125M	526 MB
gpt-neo-1.3B	5.31 GB
gpt-neo-2.7B	10.7GB

• (bigscience) BLOOM

Version	Disk Space
bloom-560m	1.12 GB
bloom-1b1	2.13 GB
bloom-1b7	3.44 GB
bloom-3b	6.01 GB
bloom-7b1	14.11 GB
bloom	700 GB

• (google) FLAN-T5

Version	Disk Space
flan-t5-small	308 MB
flan-t5-base	990 MB
flan-t5-large	3.13 GB
flan-t5-xl	11.4 GB
flan-t5-xxl	~45 GB

• (facebook) GALACTICA

Version	Disk Space
galactica-125m	250 MB
galactica-1.3b	2.63 GB
galactica-6.7b	13.73 GB
galactica-30b	~61 GB
galactica-120b	~250 GB

• (facebook) OPT

Version	Disk Space
opt-125m	x GB
opt-350m	x GB
opt-1.3b	x GB
opt-2.7b	x GB
opt-6.7b	x GB
opt-13b	x GB
opt-30b	x GB
opt-66b	x GB

• (PygmalionAI) Pygmalion

Version	Disk Space
pygmalion-350m	1.32 GB
pygmalion-1.3b	2.93 GB
pygmalion-2.7b	5.44 GB
pygmalion-6b	16.34 GB

• (bigcode) santacoder

Version	Disk Space
santacoder	4.6 GB

• flan-ul2

• OpenAssistant

[Axlfc]

Add our favorite LLM's from HuggingFace to this!

('StabilityLM 2' and beyond)