Compile secondary dex files in DexManager

Add logic for secondary dex compilation in DexManager. Also, extend the
`cmd package compile` command with '--secondary-dex' option which will
compile all used secondary dex files for the given package.

Test: flash & boot,
      cmd package compile --secondary-dex -f -m speed
com.google.android.gms
Bug: 32871170

(cherry picked from commit c22c30ed)

Change-Id: I3cf26edbfb5e9f3683e608bb2a596e1ab5682bd4

Merged-In: Ia2b95cb70d26c4ead5cb650047641b0881ca84ae