[webkit-efl] Naming rules for setting APIs

[Jinwoo Song]

Hi,

I'm revisiting API names and documentation of WebKit2 EFL settings. 
https://bugs.webkit.org/show_bug.cgi?id=98793

Currently, there is no concrete rules for API naming, so the names are inconsistent.

For example:
ewk_settings_enable_frame_flattening_set()/ewk_settings_enable_frame_flattening_get() 
vs.
ewk_settings_developer_extras_enabled_set()/ewk_settings_developer_extras_enabled_get()

Grzegorz suggested to use 'ewk_settings_enable_frame_flattening_set() with following rules and I also prefer this one.
> 1) WK1 uses similar API, for example: ewk_view_setting_enable_frame_flattening_set
> 2) Verb next to another verb (enabled_set) doesn't looks/sounds well.
> 3) I'd rather prefer not using plural in API (enabled -> enable)
> 4) The Spelling API  bug 91854 proposes API syntax based on above suggestions (as during work on this there wasn't ewk2-settings yet). So we will have consistent API.

FYI, GTK uses set_enable_frame_flattening() and Qt uses setFrameFlatteningEnabled().

So I'd like to here the opinions for the naming rule and if there is no objections for the suggested rule, I'll adjust the APIs with this one.

Thanks,
Jinwoo