Mbed OS will soon be changing directory structure to the below:

```
connectivity
├── netsocket
├── lorawan
│   ├── mbed_lib.json // nanostack-interface's mbed_lib.json
│   ├── lorastack
│   ├── tests
├── nanostack
├── cellular
├── ...

```

This PR is a part of a wider \connectivity refactoring and implements the above new directory structure for \lorawan.

Author: Ashok Rao

LICENSE.md

@@ -146,11 +146,11 @@ set(unittest-includes-base
   "${PROJECT_SOURCE_DIR}/../connectivity/cellular/include/cellular/framework/device"
   "${PROJECT_SOURCE_DIR}/../connectivity/cellular/include/cellular/framework"
   "${PROJECT_SOURCE_DIR}/../connectivity/cellular/include/cellular/framework/common"
-  "${PROJECT_SOURCE_DIR}/../features/lorawan"
-  "${PROJECT_SOURCE_DIR}/../features/lorawan/lorastack"
-  "${PROJECT_SOURCE_DIR}/../features/lorawan/lorastack/mac"
-  "${PROJECT_SOURCE_DIR}/../features/lorawan/lorastack/phy"
-  "${PROJECT_SOURCE_DIR}/../features/lorawan/system"
+  "${PROJECT_SOURCE_DIR}/../connectivity/lorawan"
+  "${PROJECT_SOURCE_DIR}/../connectivity/lorawan/lorastack"
+  "${PROJECT_SOURCE_DIR}/../connectivity/lorawan/lorastack/mac"
+  "${PROJECT_SOURCE_DIR}/../connectivity/lorawan/lorastack/phy"
+  "${PROJECT_SOURCE_DIR}/../connectivity/lorawan/system"
   "${PROJECT_SOURCE_DIR}/../connectivity/mbedtls"
   "${PROJECT_SOURCE_DIR}/../connectivity/mbedtls/include"
 )