chore: reorganize some classes [skip ci] (#345)

Just some minor cleanup.

---

_By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license_

Author: Eugene Cheung

API.md

@@ -11,16 +11,15 @@ import {
 } from "aws-cdk-lib/aws-cloudwatch";
 import { Construct } from "constructs";
 
+import { IAlarmActionStrategy, noopAction } from "./action";
 import { AlarmNamingStrategy } from "./AlarmNamingStrategy";
-import { IAlarmActionStrategy } from "./IAlarmActionStrategy";
 import {
   AlarmAnnotationStrategyProps,
   DefaultAlarmAnnotationStrategy,
   IAlarmAnnotationStrategy,
 } from "./IAlarmAnnotationStrategy";
 import { IAlarmDedupeStringProcessor } from "./IAlarmDedupeStringProcessor";
 import { IAlarmNamingStrategy } from "./IAlarmNamingStrategy";
-import { noopAction } from "./NoopAlarmActionStrategy";
 import {
   MetricFactoryDefaults,
   MetricStatistic,

lib/common/alarm/AlarmFactory.ts

@@ -4,7 +4,7 @@ import {
   TreatMissingData,
 } from "aws-cdk-lib/aws-cloudwatch";
 
-import { IAlarmActionStrategy } from "./IAlarmActionStrategy";
+import { IAlarmActionStrategy } from "./action";
 
 /**
  * Common customization that can be attached to each alarm.

lib/common/alarm/CustomAlarmThreshold.ts

@@ -1,6 +1,6 @@
 import { AlarmBase } from "aws-cdk-lib/aws-cloudwatch";
 
-import { AlarmMetadata } from "./AlarmFactory";
+import { AlarmMetadata } from "../AlarmFactory";
 
 /**
  * Properties necessary to append actions to an alarm.

lib/common/alarm/IAlarmActionStrategy.ts renamed to lib/common/alarm/action/IAlarmActionStrategy.ts

@@ -0,0 +1,5 @@
+export * from "./IAlarmActionStrategy";
+export * from "./MultipleAlarmActionStrategy";
+export * from "./NoopAlarmActionStrategy";
+export * from "./OpsItemAlarmActionStrategy";
+export * from "./SnsAlarmActionStrategy";

lib/common/alarm/MultipleAlarmActionStrategy.ts renamed to lib/common/alarm/action/MultipleAlarmActionStrategy.ts

@@ -1,11 +1,7 @@
+export * from "./action";
 export * from "./AlarmFactory";
 export * from "./AlarmNamingStrategy";
 export * from "./CustomAlarmThreshold";
-export * from "./IAlarmActionStrategy";
 export * from "./IAlarmAnnotationStrategy";
 export * from "./IAlarmDedupeStringProcessor";
 export * from "./IAlarmNamingStrategy";
-export * from "./MultipleAlarmActionStrategy";
-export * from "./NoopAlarmActionStrategy";
-export * from "./OpsItemAlarmActionStrategy";
-export * from "./SnsAlarmActionStrategy";