Igor DC authored Mar 10, 2022 and Eric Multanen committed Mar 11, 2022

This commit renames the following top-level Makefile targets:
- compile to deploy-compile
- compile-container to compile

To better reflect what is the actual dedicated compile process of EMCO
(the new compile, which is independent from containers).

The newly-named deploy-compile also aligns well with the newly introduced
develop-compile target, as they both use the new compile target, but do
different things (deployment vs development purposes).

Additionally adds an entirely new section to the top-level README.md
file that describes what each of the targets of the Makefile do.

Signed-off-by: Igor D.C <igor.duarte.cardoso@intel.com>