Port the dexpreopt logic from Make to the dexpreopt package in Soong,
and use it to dexpreopt Soong modules. The same package is also
compiled into the dexpreopt_gen binary to generate dexpreopt scripts
for Make modules.
Bug: 119412419
Bug: 120273280
Test: no differences to dexpreopt outputs on aosp_sailfish system/,
only expected changes to dexpreopt outputs on system_other
(.vdex files for privileged Soong modules no longer incorrectly
contain .dex contents).
Change-Id: Ib67e2febf9ed921f06e8a86b9ec945c80dff35eb
