feat: Framework to handle INCP messages

app/incp/schema.yml

@@ -1,10 +1,67 @@
 modules:
-  - name: mod_a
-    enums: []
+  - name: calc
+    enums:
+      - name: enum_a
+        doc: Enum a
+        values: [a, b]
     variables:
-      - name: var_a
-        doc: Var a
-        type: I32
-    reports: []
-    commands: []
-    events: []
+      - name: time_boot
+        doc: Time in seconds since last reboot
+        type: U32
+
+      - name: time_real
+        doc: Time in seconds since epoch
+        type: U32
+
+      - name: test_str
+        doc: A test string with the fixed value TEST
+        type: S16
+
+      - name: test_enum
+        doc: Tests enums
+        type: enum_a
+
+    reports:
+      - name: time
+        doc: Collection of all time variables
+        variables:
+          - time_boot
+          - time_real
+
+    commands:
+      - name: add
+        doc: Sums two numbers
+        args:
+          - name: left
+            doc: First operand
+            type: I32
+          - name: right
+            doc: Second operand
+            type: I32
+        rets:
+          - name: val
+            doc: Result
+            type: I32
+
+      - name: div
+        doc: Divides two numbers
+        args:
+          - name: left
+            doc: First operand
+            type: I32
+          - name: right
+            doc: Second operand
+            type: I32
+        rets:
+          - name: val
+            doc: Result
+            type: I32
+          - name: err
+            doc: Error flag, set on error
+            type: Bool
+
+    events:
+      - name: event_a
+        doc: Event a
+      - name: event_b
+        doc: Event b