Check for expired alerts stub

Author: tboeghk

src/main/java/org/observabilitystack/alertecho/internal/AlertExpiredChecker.java

@@ -0,0 +1,13 @@
+package org.observabilitystack.alertecho.internal;
+
+import org.springframework.stereotype.Service;
+
+/**
+ * Walks throough all stored alerts and resolves them if they haven't seen an
+ * update in a certain amount of time
+ */
+// TODO
+@Service
+public class AlertExpiredChecker {
+
+}

src/main/java/org/observabilitystack/alertecho/model/Alert.java

@@ -11,6 +11,7 @@
 @ToString
 public class Alert {
 
+    // TODO: store updated up as instant
     private AlertStatus status;
     private Map<String, String> labels;
     private Map<String, String> annotations;