Add skip-sdk-check to extract_apks

Add skip-sdk-check to skip checking the SDK version when extracting an
APK/APEX from an App Set Bundle. This can be used when the platform SDK
version is not defined and the APEXs/APKs use SHA based SDK versions.
This check should not be set to true for non Beta dessert releases

Bug: 274518686
Test: # Add SHA targeting modules to platform
m SOONG_SKIP_APPSET_SDK_CHECK=true  #Build Passes
m SOONG_SKIP_APPSET_SDK_CHECK=false #Build Fails
m #No config supplied, build fails

Change-Id: I1919437d3410f09c991e1de39031bd88e1f8246a