Add v0.9.0 changelog

Signed-off-by: Dale Haiducek <dhaiduce@redhat.com>

CHANGELOG/CHANGELOG-v0.9.0.md

@@ -0,0 +1,14 @@
+# v0.9.0
+
+- Switch leader election default
+- Enable foreground deletion
+- Send compliance events in more situations
+- Update named objects in arrays instead of appending
+- Perform validation of object definitions
+- Evaluate policies on every loop when evaluationInterval isn't set
+- Add metrics to record how long each config policy takes to be evaluated
+- Add metrics to time the compare algorithm
+- Send compliance state events synchronously for reliable ordering of compliance events
+- Allow enforcing policies that define a status with missing required fields
+- Update to Go v1.19
+- Favor the existing array ordering and content when comparing arrays