push-only streaming channel implementation

[onur-ozkan]

Implementation Specifications:

• Build the implementation on top of SSE.
• Allow filtering of events (e.g., users may choose to listen only to price events).
• By default, utilize a TLS connection to enable SSE with HTTP2, as HTTP1 SSE has a limitation of establishing only six connections simultaneously.
• Provide the option to allow external traffic access through configuration, allowing some users to utilize this feature from seed nodes, which can help keep their nodes lighter.
• Event interval configurations (run x event every y seconds)
• Allow activating specific events from the MM2 configuration.(.e.g, stream only the price events from mm2)

p.s., specs can be extended depending on the R&D