Theming, Updated Build scripts and more

[EddieEldridge]

• Enabling Discord Rich Presence no longer opens an extra window, it now seamlessly toggles on and off. You just need to use the launcher if you want to enable it.
• Redesigned main launcher
• Added a new default theme for the launcher, console and all other EOP GUI elements
• Added the ability to configure ImGUI elements (Launcher, Console, ImGUI Lua etc.) via a single toml file. See configuring the EOP launcher tutorial for more information.
• Added an executable GUI that allows you to create the toml files with a GUI tool. Thank you ImThemes.
• Added tooltips that explain what all the EOP launcher settings do
• Updated build scripts to use msbuild (should be faster and have better output now)
• Added discrete build jobs for each project with the ability to pass in a mod folder as a parameter so the files get copied there (Release/Debug)