Fork code changes into platform/ and module/ folders

The platform folder will have all changes reverted to
their state before the refactoring to avoid any new
behavior when flag is off or in intermediate releases
like 25q1.

(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9f0ff89cc2f442869497d3c305475d5eaf3201be)
Flag: build.release_ondevice_intelligence_module
Bug: 376427781
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d31abfafca8490570141aca7d2659281f566c14c)
Merged-In: Ie2293837116684da833980f85b49099bfffe44bf
Change-Id: Ie2293837116684da833980f85b49099bfffe44bf