eolian_mono: support eo access modifiers

Summary:
Because in C# interface members can't include access modifiers, eolian_mono
ignore function scope tags in eo interfaces.

ref T7494

Reviewers: q66, felipealmeida, lauromoura, segfaultxavi, Jaehyun_Cho

Reviewed By: Jaehyun_Cho

Subscribers: cedric, reviewers, committers

Tags: efl

Maniphest Tasks: T7494

Differential Revision: https://phab.enlightenment.org/D9128