feat: support custom http code

[dspo]

What this PR does / why we need it:

feat: support custom http code

you can define method that reference github.com/erda-project/erda-infra/proto-go/http.HttpInfo in your proto message:

import "infra/http/infra-http.proto";

service MyService {
  rpc HelloWorld(infra.http.Void) returns(HelloWorldResp) {
    option(google.api.http) = {
      get: "/api/hello-world",
    };
  }
}

message HelloWorldResp {
  string msg = 1;
  infra.http.HttpInfo httpInfo = 2 [json_name = "-"];
}

you can return custom HTTP Status Code in your handler now:

func (p *MyService) HelloWorld(ctx context.Context, void *http1.Void) (*pb.HelloWorldResp, error) {
	return &pb.HelloWorldResp{
		Msg: time.Now().Format(time.RFC3339),
		HttpInfo: &http1.HttpInfo{
			Status: http.StatusAccepted,
			Headers: []*http1.HttpHeader{
				{
					Key:    "x-custom-key-a",
					Values: []string{"v1", "v2"},
				}, {
					Key:    "x-custom-key-b",
					Values: []string{"something", "anything"},
				},
			},
		},
	}, nil
}

the cURL result:

# curl the-host/api/hello-world -v
> GET /api/hello-world HTTP/1.1
> User-Agent: curl/7.29.0
> Accept: */*
> 
< HTTP/1.1 202 Accepted
< Vary: Origin
< X-Custom-Key-A: v1
< X-Custom-Key-A: v2
< X-Custom-Key-B: something
< X-Custom-Key-B: anything
< Date: Tue, 19 Jul 2022 17:05:46 GMT
< Content-Length: 196
< Content-Type: text/plain; charset=utf-8
< 
{"success":true,"data":{"msg":"2022-07-20T01:05:46+08:00"}}

Which issue(s) this PR fixes:

Fixes #

Specified Reviewers:

/assign @your-reviewer

[codecov]

Codecov Report

Merging #287 (16a105d) into master (e0758b0) will decrease coverage by 0.13%.
The diff coverage is 6.25%.

@@            Coverage Diff             @@
##           master     #287      +/-   ##
==========================================
- Coverage   38.01%   37.87%   -0.14%     
==========================================
  Files         100      100              
  Lines        5830     5845      +15     
==========================================
- Hits         2216     2214       -2     
- Misses       3449     3466      +17     
  Partials      165      165              

Impacted Files	Coverage Δ
pkg/transport/http/encoding/encoding.go	3.87% <0.00%> (-0.51%)	⬇️
...iders/mysql/v2/plugins/fields/soft_delete_stamp.go	59.15% <100.00%> (ø)
pkg/parallel/future.go	86.20% <0.00%> (-6.90%)	⬇️