Place native shared libs for soong build DCLA.

Currently, DCLA is built in rapid. With new train build, DCLA will be
directly built in soong, just like a regular module, refer to
b/239679485. In old rapid built DCLA, native shared libs are placed the
following way inside apex:

/lib(64)?/foo.so/<sha256 foo.so>/foo.so

The sha256 hash is used to differentiate different libs. To ensure the
same lib placement in soong built DCLA, three changes are made:

(1) in apex.go, added an apex soong module property called
dynamic_common_lib_apex to indicate if this apex is a DCLA
(2) in builder.go, update apexRule to call into run_apexer binary
instead of apexer binary. run_apexer binary is a wrapper of apexer
binary. If it is DCLA, the wrapper binary will place the native
shared libs in desired location and update canned_fs_config accordingly.

TEST: manuualy added this field to adbd. Local build by banchan
and then inspect the payload image contensts. All libs are proprely
placed.

BUG: 241096765

Change-Id: I2a5e7ea75a6e9a7af1932ff7dccb9dc3a3785db9