Resolver interface types and function names are not Go-ified

[menma1234]

What happened?

Somewhat related to #1383.

The resolver interface types that get generated and the functions to get those resolvers from the ResolverRoot don't follow the standard Go conventions on capitalization, even though these appear to get followed for the generated field names within model structs. This causes issues with linters such as revive since they'll trip the naming convention rules on the files that have the resolver implementations.

On a similar note, this also happens for generated model names, but that's less of an issue since they live within a generated file which linters are able to detect easily so they don't trip the rules.

What did you expect?

All generated types and names are capitalized consistently.

Minimal graphql.schema and models to reproduce

GraphQL schema:

type TestType {
    vmDetail: VmDetail
}

type VmDetail {
    someVmField: String
}

Config:

schema:
  - schema.graphql
exec:
  filename: generated/generated.go
  package: generated
model:
  filename: gqlmodel/models_gen.go
  package: gqlmodel
autobind:
  - github.com/test/gqlmodel
models:
resolver:
  filename: resolver/resolver.go
  package: resolver
  type: Resolver

Generated resolver.go:

package resolver

// THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.

import (
        "context"

        "github.com/test/generated"
        "github.com/test/gqlmodel"
)

type Resolver struct{}

// // foo
func (r *testTypeResolver) VMDetail(ctx context.Context, obj *gqlmodel.TestType) (*gqlmodel.VmDetail, error) {
        panic("not implemented")
}

// // foo
func (r *vmDetailResolver) SomeVMField(ctx context.Context, obj *gqlmodel.VmDetail) (*string, error) {
        panic("not implemented")
}

// TestType returns generated.TestTypeResolver implementation.
func (r *Resolver) TestType() generated.TestTypeResolver { return &testTypeResolver{r} }

// VmDetail returns generated.VmDetailResolver implementation.
func (r *Resolver) VmDetail() generated.VmDetailResolver { return &vmDetailResolver{r} }

type testTypeResolver struct{ *Resolver }
type vmDetailResolver struct{ *Resolver }

Note the capitalization differences for "vm":

func (r *testTypeResolver) VMDetail(ctx context.Context, obj *gqlmodel.TestType) (*gqlmodel.VmDetail, error) {
                           ^^                                                               ^^

func (r *Resolver) VmDetail() generated.VmDetailResolver { return &vmDetailResolver{r} }
                   ^^                   ^^

versions

• go run github.com/99designs/gqlgen version?
  v0.17.20

• go version?
  go version go1.19 linux/amd64