Implicit Selector Expressions do not work with overloaded procedures

[vassvik]

Implicit Selector Expressions do not work with overloaded procedures. Minimal standalone example:

package main 

main :: proc() {
    Bar :: enum {A}

    foo1 :: proc(a: int, b: Bar) {}
    foo2 :: proc(a: string, b: Bar) {}
    foo :: proc{foo1, foo2};

    foo1(1, .A);
    foo2("", .A);
    foo(1, Bar.A);
    foo("", Bar.A);
    foo(1, .A);  // Cannot determine type for implicit selector expression '.A'
    foo("", .A); // Cannot determine type for implicit selector expression '.A'
}

Full error:

main.odin(14:13) Cannot determine type for implicit selector expression '.A'
main.odin(14:5) No procedures or ambiguous call for procedure group 'foo' that match with the given arguments
	Given argument types: (untyped integer, invalid type)
Did you mean to use one of the following:
	main.foo1 :: proc(a: int, b: Bar) at main.odin(6:5)
	main.foo2 :: proc(a: string, b: Bar) at main.odin(7:5)

[gingerBill]

This is not technically a bug the more I actually look at it but rather just a lack of rules defined for procedure groups.

[gingerBill]

I have added support for this now in previous commit 56d365a

However, this will not work for named arguments as of yet.

[gingerBill]

I have no added support for this too:

foo(a=1, b=.A);  
foo(a="", .b=A);