Software: add initial software-version mgmt

Change-Id: I3b50488b8383c595b4b41375ea0d62d62bdc0eed
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/xyz/openbmc_project/Software/ActivationProgress.interface.yaml b/xyz/openbmc_project/Software/ActivationProgress.interface.yaml
new file mode 100644
index 0000000..9f96246
--- /dev/null
+++ b/xyz/openbmc_project/Software/ActivationProgress.interface.yaml
@@ -0,0 +1,8 @@
+description: >
+    Activation progress for an associated xyz.openbmc_project.Software.Version.
+properties:
+    - name: Progress
+      type: uint8
+      description: >
+        An integer between 0 and 100 representing the percentage complete of
+        the current activation progress.