Auto merge of #31132 - gchp:internals, r=brson

This adds the basic structure for the internals documentation, and also the initial version of the "Overview".

This first section gives and overview of the compilation process. It mentions the individual phases, and gives mention to their function & links to the relevant crates in the source tree.

This is a very general overview which is meant to lead in to the next section which will cover the `driver`. That section will give more in-depth information on each of the phases & cover things like sessions and the driver API. I wanted to give a more general introduction before getting into that detail.

0 files changed, 0 insertions, 0 deletions