commands: add the 'sdk' command to manage SDK.

This command can list and install SDK.

Run 'west sdk install' to install the SDK.
Run without any parameter, installing
specified by SDK_VERSION in the source tree.
'west sdk' to show installed SDK information.

This command is just a wrapper for SDK's setup command,
but it simplifies the installation process. It will be a good
improvement for onboarding first-time users.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

scripts/requirements-base.txt

@@ -17,10 +17,12 @@ pykwalify
 canopen
 packaging
 progress
+patool
 psutil
 pylink-square
 pyserial
 requests
+semver
 
 # for ram/rom reports
 anytree

scripts/west-commands.yml

@@ -76,3 +76,8 @@ west-commands:
       - name: simulate
         class: Simulate
         help: simulate board
+  - file: scripts/west_commands/sdk.py
+    commands:
+      - name: sdk
+        class: Sdk
+        help: manage Zephyr SDK