feat: expose watcher class types (#555)

## Description

This type is required for Pepr
[1770](defenseunicorns/pepr#1770) to reduce
complexity

## Related Issue

Fixes #

<!-- or -->

Relates to #[1770](defenseunicorns/pepr#1770) 

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [x] Other (security config, docs update, etc)

## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor Guide
Steps](https://docs.pepr.dev/main/contribute/#submitting-a-pull-request)
followed

Signed-off-by: Case Wylie <[email protected]>

src/fluent/types.ts

@@ -10,6 +10,11 @@ import { WatchCfg, Watcher } from "./watch";
 import https from "https";
 import { SecureClientSessionOptions } from "http2";
 
+/*
+ * Watch Class Type
+ */
+export type WatcherType<T extends GenericClass> = Watcher<T>;
+
 /**
  * Fetch options and server URL
  */