EGL Multifile Blobcache: Fix applyLRU

This CL contains updates our cache eviction to be an actual
LRU instead of random.

* Entries are now tracked in a sorted map such that old entries
  are accessed first in applyLRU.
* Access and update times are tracked with nanosecond accuracy.

Additional tests:
* CacheEvictionIsLRU

Based on work by: Igor Nazarov <i.nazarov@samsung.com>

Test: libEGL_test, EGL_test, ANGLE trace tests, apps
Bug: b/351867582, b/380483358
Flag: com.android.graphics.egl.flags.multifile_blobcache_advanced_usage
Change-Id: I0b6f407b6d5a29f9487f7d7604d723e701c6f6d5