Ignore test directories

[prabhu]

Need to remove this code duplication and add support for ignoring certain directories such as test, tests, testsuite etc

blint-db/blint_db/handlers/language_handlers/meson_handler.py

Line 57 in 9aab415

for root, dir, files in os.walk(full_project_dir):

blint-db/blint_db/projects_compiler/vcpkg.py

Line 55 in 9aab415

for root, _, files in os.walk(directory):