`juce6` technical preview branch

[t0m]

The first feature we’ve made public is CMake support.

Since this is a very substantial change it’s helpful to move all CMake-related discussion into a separate thread:

Native, built-in CMake Support in JUCE

No Projucer Required! Over the past few months, we’ve been working to add standalone, idiomatic CMake support to JUCE. This idea has been around for a while (see this forum post from 2017), and was a popular suggestion in the 2019 JUCE User Survey, especially amongst our Pro users. This new native CMake support will effectively deprecate the beta CLion exporter in the Projucer. Building with CMake can provide a few advantages over the current Projucer-based approach, including: wider IDE/tool…