feat: add full_name callback to proto messages

[yordis]

closes #408

[yordis]

It seems that full_name could be deterministic at compile time

syntax = "proto3";
package demo.v1;

import "google/protobuf/any.proto";

message Example {
  message NestedFirstLevel {
    message NestedSecondLevel {}

    NestedSecondLevel nested_second = 1;
  }

  enum NestedTypes {
    TYPE_UNSPECIFIED = 0;
    TYPE_ONE = 1;
    TYPE_TWO = 2;
  }

  NestedFirstLevel nested_first = 1;
  NestedTypes type = 2;
}

enum TopLevelEnum {
  TOP_LEVEL_UNSPECIFIED = 0;
  TOP_LEVEL_ONE = 1;
  TOP_LEVEL_TWO = 2;
}

message Integration {
  google.protobuf.Any data = 1;
}

package demo__test

import (
	"fmt"
	"github.com/stretchr/testify/assert"
	"google.golang.org/protobuf/reflect/protoreflect"
	"testing"
	demov1 "demo/gen/pb/demo/v1"
)

func TestName(t *testing.T) {
	nestedFirstNestedSecond := &demov1.Example_NestedFirstLevel_NestedSecondLevel{}
	nestedFirst := &demov1.Example_NestedFirstLevel{NestedSecond: nestedFirstNestedSecond}
	example := demov1.Example{NestedFirst: nestedFirst}

	exampleName := fullName(&example)
	fmt.Printf("%v", exampleName)

	nestedFirstName := fullName(example.GetNestedFirst())
	nestedFirstNameTop := fullName(nestedFirst)
	fmt.Printf("%v  --- %v", nestedFirstName, nestedFirstNameTop)
	assert.Equal(t, nestedFirstName, nestedFirstNameTop)

	nestedFirstNestedSecondName := fullName(example.GetNestedFirst().GetNestedSecond())
	nestedFirstNestedSecondNameTop := fullName(nestedFirstNestedSecond)
	fmt.Printf("%v --- %v", nestedFirstNestedSecondName, nestedFirstNestedSecondNameTop)
	assert.Equal(t, nestedFirstNestedSecondName, nestedFirstNestedSecondNameTop)
}

func fullName(msg protoreflect.ProtoMessage) protoreflect.FullName {
	return msg.ProtoReflect().Descriptor().FullName()
}

[yordis]

It seems that Golang does not allow me pass enum values to anypkg, so I think that such full_name isn't in there for the enum values since it always exists inside a message as a type

[yordis]

https://protobuf.com/docs/language-spec#fully-qualified-names

[yordis]

@whatyouhide @v0idpwn I think it is ready to code review, at least adding the fallback to follow up on Any type

[yordis]

As far as I can tell package is technically required, a lot of test cases where such information is missing, I wonder if that should be fixed

[yordis]

** (RuntimeError) reading from :stdio failed: {:error, {:no_translation, :unicode, :latin1}}

What in the world is that 🤔

[whatyouhide]

Mh yeah, I have very vague memories of this but no notes on it, sorry 😭 I don't really have cycles to look into this now :(