West: Add `west simulate` command

Introduce `simulate `command for running samples on a simulator of
choice. Initial implementation consists of one runner, dedicated for
Renode.

Signed-off-by: Michał Szprejda <mszprejda@antmicro.com>
diff --git a/scripts/west-commands.yml b/scripts/west-commands.yml
index 6cd0c51..54254c3 100644
--- a/scripts/west-commands.yml
+++ b/scripts/west-commands.yml
@@ -66,3 +66,8 @@
       - name: bindesc
         class: Bindesc
         help: work with Binary Descriptors
+  - file: scripts/west_commands/simulate.py
+    commands:
+      - name: simulate
+        class: Simulate
+        help: simulate board