vndk-def: Reduce deps-insight startup time

This commit reduces deps-insight startup time by creating DOMs for
modules on demand.  Since the user usually searches modules by name, it
is great to hide all modules by default.

Test: ./vndk-definition-tool.py deps-insight ...
Change-Id: Ia58833f9177638222788ef7a468a88dd35feec2a
2 files changed