Add a sharded version of "framework-minus-apex"...

... for local testing of "sharded jarjar".

We don't use the output of this module for anything yet.

- Trace without sharding enabled: https://screenshot.googleplex.com/9SjqdsEU4YxWJ8z
- Trace with RELEASE_USE_SHARDED_JARJAR_ON_FRAMEWORK_MINUS_APEX:
  https://screenshot.googleplex.com/mHozfTMqmK9boH6

Test: m framework-minus-apex framework-minus-apex_jarjar-sharded
  and make sure the javac output jars have the same entries.
  $ diff \
    <(jar tf $ANDROID_BUILD_TOP/out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/jarjar/framework.jar \
      | sort) \
    <(jar tf $ANDROID_BUILD_TOP/out/soong/.intermediates/frameworks/base/framework-minus-apex_jarjar-sharded/android_common/jarjar/framework-minus-apex_jarjar-sharded.jar \
      | sort)
  (no output)

Bug: 383559945
Flag: RELEASE_USE_SHARDED_JARJAR_ON_FRAMEWORK_MINUS_APEX
Change-Id: I2406f93f794b75a3f922d9c6f1234c1ae73ba330