Limit the max number of service connection a process can bind to

services to be 3000.

This limits the max number of outgoing ServiceConnection a process is allowed to bind to a service (or multiple services) by bindService() calls.

1. Add device_config key "max_service_connections_per_process" to set
  mMaxServiceConnectionsPerProcess, the default value is 3000.
2. If the per process max session connection is exceeded, Context.bindService()
   calls returns false and the service connection is not connected.

Bug: 236039413
Test: atest cts/tests/app/src/android/app/cts/ServiceTest.java#testMaxServiceConnections
Change-Id: I9a4e97a4edaa8f2a52bf67b19ce3948d0ebcfdea