* Separate HTTP related code into `extensions/http` as a Go plugin

* Move `extensions` folder into `tap` folder

* Move HTTP files into `tap/extensions/lib` for now

* Replace `orcaman/concurrent-map` with `sync.Map`

* Remove `grpc_assembler.go`

* Remove `github.com/up9inc/mizu/tap/extensions/http/lib`

* Add a build script to automatically build extensions from a known path and load them

* Start to define the extension API

* Implement the `run()` function for the TCP stream

* Add support of defining multiple ports to the extension API

* Set the extension name inside the extension

* Declare the `Dissect` function in the extension API

* Dissect HTTP request from inside the HTTP extension

* Make the distinction of outbound and inbound ports

* Dissect HTTP response from inside the HTTP extension

* Bring back the HTTP request-response pair matcher

* Return a `*api.RequestResponsePair` ...