Support AppLongIdentAndSingleParenArg

[edgarfgp]

Based on the Oak AST generated this we can add support for this

    [<Fact>]
    let ``Produces let binding with AppLongIdentAndSingleParenArg expression``() =
        Oak() {
            AnonymousModule() {
                Value("res", AppLongIdentAndSingleParenArg([ "conn"; "Open" ], ConstantExpr(ConstantUnit())))
                Value("res2", AppLongIdentAndSingleParenArg([ "conn"; "Open" ], "()"))
                Value("res3", AppLongIdentAndSingleParenArg("conn.Open", "()"))
            }
        }
        |> produces
            """

let res = conn.Open()
let res2 = conn.Open ()
let res3 = conn.Open ()

"""

[edgarfgp]

cc @lamg