ImGuiFileDialog v0.5.3.1

One New Feature :

A 'confirm to OverWrite dialog' exist now for prevent overwrite if file exist

My appologies :
The last release v0.5.3 was deleted because of a big mistake on the repo.
The content was not corresponding to the expected content

See the rest of the changes :

[FIX] : fix of display of ImGuiTable header
[ADD] : add returns cases in demo app for see what we obtain after the file dialog is closed
[FIX] : fix, when the file field is empty the ok button is hidden. before that the ok was not closing the dialog [issue #36]
[FIX] : only one dialog can be, now, displayed per frame. (before, many dialog was appended, and many cotnrol was unusable due to same id)
[ADD] : a func WasOpenedThisFrame for test if the dialog was opened during this frame
[ADD] : add ifndef for IS_FLOAT_DIFFERENT and IS_FLOAT_EQUAL
[ADD] : Add a 'confirm to OverWrite dialog' if file exist. just need to define the flag ImGuiFileDialogFlags_ConfirmOverwrite
[IMP] : Improvement, Update readme doc for the 'confirm to OverWrite dialog'
[IMP] : Improvement, the whole documentation added in the header code comment section. more convenient han the site but without gifs :)
{IMP] : Improvement, new case added in sample App for the 'confirm to OverWrite dialog'
[RFR] : Refactor, some func, vars, warnings fix
[VER] : Version, IMGUIFILEDIALOG_VERSION passed to v0.5.3
[ACT] : Action, reactivation of Osx Action, since the github action server have fixed the issue now