Feature request: vertical ordering

[ccoVeille]

This linter and the creation of #24 reminds me the existence of the following tools:

• vertfn
• refdir

They are both mentioned here

• Ensure foo() is before subFoo() in source code golangci/golangci-lint#5342

vertfn addition to golangci-lint was debated here

refdir now offers integration via golangci-lint plugin

https://github.com/devnev/refdir?tab=readme-ov-file#golangci-lint-plugin

Maybe these tools could converge in funcorder via options

[ldez]

IMHO, this is out of the scope of this linter, as explained inside the readme, the linter is focused on a specific rule.

Also, I think it will require types, and the linter will become a "slow" linter.

The alphabetical ordering proposed inside #24 is different because it's just a "simple" variant of the current rule and doesn't require types.

[manuelarte]

@ldez would it require using types if this linter would propose something like this:

type MyStruct struct {}

// it would be better to sort the methods, first `A`, then `B`.
func (m MyStruct) B() {
  println("Hello")
}

func (m MyStruct) A() {
  m.A()
}

(of course I would need to check more cases/scenarios.)

But basically by only checking the order for how the methods are called inside themselves? not checking any other external file.