Release 2.1.1 of TI Simplelink Connect

Release 2.1.1 of TI Simplelink Connect (#31)
This commit consolidates work done for Release 2.1.0 of the TI
Simplelink Connect iOS and Android application

Changes:

1. Scanner:

   • Firmware over-the-air (OTA) for Zephyr-based Bluetooth device.
   • Create/remove bonding manually (Android only).
   • Dedicated view for "Classification Mode" service..
   • Dedicated view for "Data Acquisition Mode" service.
   • Dedicated view for "Battery" Service.

2. BLE Mesh:

   • Remote provisioning capability (iOS only).
   • Proxy support.
   • Node reset functionality directly from the app.
   • Create, remove, and modify network groups.
   • Minor fixes.

3. Stress tests:

   • Fixed calculation logic for accurate test results reporting.

Signed-off-by: Texas Instruments