Merge pull request #30 from roadrunner-server/revert/connectrpc

revert: drop Connect-RPC generated code, keep plain messages

chore: add body to the request

Signed-off-by: Valery Piashchynski <piashchynski.valery@gmail.com>

feature: add id to thhandler response

Signed-off-by: Valery Piashchynski <piashchynski.valery@gmail.com>

feature: HttpProxyService

Signed-off-by: Valery Piashchynski <piashchynski.valery@gmail.com>

v6.0.0-beta.9

Adds generated Connect-RPC + gRPC bindings for Tier C plugin services:
- informer/v1.InformerService
- metrics/v1.MetricsService
- resetter/v1.ResetterService
- tcp/v1.TCPService

Sourced from roadrunner-server/api PR #74.

[#73]: feat(service): mark GetStatus, GetStatuses, ListServices as NO…

…_SIDE_EFFECTS

v6.0.0-beta.7 — lock Exists method supports GET via NO_SIDE_EFFECTS

v6.0.0-beta.6 — kv read methods support GET via NO_SIDE_EFFECTS

[#70]: feat: add Connect-RPC service definitions for 6 plugins

chore: add request id

Signed-off-by: Valery Piashchynski <piashchynski.valery@gmail.com>