Pjrpc

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- openapi specification generation implemented
- openrpc specification generation implemented
- web ui support added (SwaggerUI, RapiDoc, ReDoc)

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- pydantic schema generation bug fixed
- method registry merge implementation changed

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- pydantic validation schema bug fixed
- method registry merge bug fixed
- method view validation bug fixed
- method metadata format changed

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- some trash removed

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- httpx integration added

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- dependencies updated