PCB editor (wishlist): Add "Switch H & V mode for new graphics" toolbar button to PCB & FP editor

Description

It would be nice if "Switch H & V mode for new graphics" toolbar button would be added to PCB editor, because it is frequently used feature to toggle. It is currently accessed via preferences dialog (occupies ~20seconds to toggle this on my PC with SSD). Eeschema has this button, and I toggle it frequently.

Steps to reproduce

1. Draw line segments containing only 45 or 90 deg angles;
2. One will need to go to Preferences -> Preferences -> Wait for dialog to load (very slow process, several seconds) -> PCB editor, Editing Options -> check appropriate checkbox -> Click OK -> Wait several seconds more for UI to redraw;
3. Now continue your work; change your mind, try to draw free angle line;
4. Repeat long lasting step 2.

Do the same in eeschema. Step 2 occupies only one mouse click inside the toolbar. The lack of this button is really painful some times :)

KiCad Version

Application: KiCad (64-bit)

Version: (5.99.0-10962-gfbc135e69f), release build

Libraries:
	wxWidgets 3.1.5
	libcurl/7.74.0-DEV Schannel zlib/1.2.11

Platform: Windows 10 (build 19042), 64-bit edition, 64 bit, Little endian, wxMSW

Build Info:
	Date: Jun 10 2021 21:00:20
	wxWidgets: 3.1.5 (wchar_t,STL containers)
	Boost: 1.75.0
	OCC: 7.5.0
	Curl: 7.74.0-DEV
	ngspice: 34
	Compiler: Visual C++ 1928 without C++ ABI

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON