[BLCKCHN-201] add 2nd ai call to generate final answer

[leejw51crypto]

• consume one more ai api call to generate final answer
• not to break protocol, add finalResponse
• use current context so far, maxium 10 messages (sliding window)
• modified clients : typescript, tgbot, python

[leejw51crypto]

• add context to typescript, tg bot
• change model to gpt-4o
• to send native token "send native token 0x... 0.1"

[leejw51crypto]

resolving conflicts and tidy up

[leejw51crypto]

rebased

[leejw51crypto]

ok, i'll make a video

[rarcifa]

@leejw51crypto looks good. Do have bandwidth to update the cdc-agent-service to follow the same context sliding window?

[leejw51crypto]

cdc-agent-service is stateless, currently client hold all context and sliding window