Add ghcide configuration files

This commit adds three new files

1. A hie.yaml file to the project root which specifies to IDEs how to

set up the correct environment for loading GHC. This currently
specifies to call the ./hadrian/hie-bios script.

2. A hie.yaml file for the hadrian subcomponent, which uses the

cabal cradle type.

2. The ./hadrian/hie-bios script which supplies the correct arguments

for an IDE to start a session.

With these two files it is possible to run

ghcide compiler/

and successfully load all the modules for use in the IDE.

or

ghcide --cwd hadrian/ src/

to test loading all of Hadrian's modules.

Closes Trac #17194