Even MORE debug power for imgui

[RenechCDDA]

Summary

None

Purpose of change

Recently I've been testing some really silly imgui stuff, which has required repeatedly setting/unsetting flags.

I copied off the imgui demo for a checkbox, but I stepped back and thought "why do I need to re-implement my checkbox every time I'm playing with one of imgui's default widgets?"

Describe the solution

Setup some generic globally-accessible/includable debug functions

Implement a cataimgui::BeginTable() alias for ImGui::BeginTable() so we can inject debug flags

add a generic set of flag checkboxes that can be inserted into imgui windows to tune behavior (gated behind debug mode so they can be safely inserted anywhere)

Move the default cataimgui::window flags to be governed by the debug settings so future imgui windows can be rapidly prototyped

(Not done) Add a simple dedicated window to access the flag settings

(Not done) Move more imgui default widgets to aliases and audit all existing calls to them

Describe alternatives you've considered

Testing

It's for debug! Testing is all I do!

Additional context

As we move to more and more windows having been ported to imgui some of these options (controlling the default window flags) may need to be removed or made more specific. But until then they should be used as much as possible