This enables running the unit tests without manually querying each entry
function. The compiler generates a .lib file for us which load the .dll
file and retrieves the entry functions.

Also fix project dependencies and DLL path.

Bug b/116336664

Change-Id: I4cbd80bd071a20058b034db8fb12e31f9af2e081
Reviewed-on: https://swiftshader-review.googlesource.com/c/22489Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>