This opens up the Delphi IDE with the correct KEYMAN_ROOT environment,
which allows for debugging. This is very helpful when working with
multiple worktrees, and also helps to avoid editing a project in the
wrong tree.
Now builds from a clean repo:
developer/src/build.sh configure build test publish
* Splits kmbrowserhost into kmdbrowserhost for Developer; this means
that Developer Browser Host now inherits the Developer settings rather
than the Keyman for Windows settings, and simplifies distribution and
management. The only difference between the two is in the startup code
so this seems like a good split.
* Cleanup of various build scripts and dependencies.
Relates to #11317.
Initial baby steps for configuring build environment for Delphi and VC++
within build.sh without needing to call out to batch files.
Proof-of-concept build.sh for setup.dpr.
