Add initial test driver conforming to the new spec

Also adjusted the different makefiles accordingly.
Note: driver lifetime is currently statically defined in the header, but
this will be replaced in the future based on autogeneration of lifetime
values by a script (TBD)

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
diff --git a/scripts/generate_visualc_files.pl b/scripts/generate_visualc_files.pl
index 3d4baca..4695955 100755
--- a/scripts/generate_visualc_files.pl
+++ b/scripts/generate_visualc_files.pl
@@ -39,6 +39,7 @@
 my $source_dir = 'library';
 my $test_source_dir = 'tests/src';
 my $test_header_dir = 'tests/include/test';
+my $test_drivers_header_dir = 'tests/include/drivers';
 
 my @thirdparty_header_dirs = qw(
     3rdparty/everest/include/everest
@@ -116,6 +117,7 @@
         && -d $source_dir
         && -d $test_source_dir
         && -d $test_header_dir
+        && -d $test_drivers_header_dir
         && -d $programs_dir;
 }
 
@@ -262,6 +264,7 @@
                        $mbedtls_header_dir,
                        $psa_header_dir,
                        $test_header_dir,
+                       $test_drivers_header_dir,
                        $source_dir,
                        @thirdparty_header_dirs,
                       );