Expand strings into samples that are representative of what'll be
shown in UI, and warn if they're longer than defined CHAR LIMIT.
Guide all-caps strings towards android:textAllCaps if actions.
Warn when strings mention "phone" without defining product-specific
variants.
Bug: 76097999
Test: manual
Change-Id: I08046ecf531b2d616cb357639e804b73d6a12bea
Strings are tedious to get right, so write a lint script that catches
common errors to warn developers before they're uploaded.
Test: builds, boots
Bug: 76097999
Change-Id: I9826ca796c17cd93a100951d56214653de63a379