samples: net: lwm2m_client: support for compiling in new objects

Let's add support for recently added LwM2M objects:
- Connectitiy Monitoring
- Location
- IPSO Accelerometer
- IPSO Buzzer
- IPSO On/Off Switch
- IPSO Push Button

Currently, this is limited to compile enabled and manual creation
of objects via LwM2M server.  Objects will respond to read/write
operations, but not have real HW backing.

Signed-off-by: Michael Scott <mike@foundries.io>