feat(hooks): Added useParams hook (#36)

src/deck-hooks/index.ts

@@ -0,0 +1 @@
+export * from './useParams'

src/deck-hooks/useParams.ts

@@ -0,0 +1,15 @@
+import { ReactRouter } from "../webpack";
+
+/**
+ * Get the current params from ReactRouter
+ * 
+ * @returns an object with the current ReactRouter params
+ * 
+ * @example
+ * import { useParams } from "decky-frontend-lib";
+ * 
+ * const { appid } = useParams<{ appid: string }>()
+ */
+export const useParams = Object.values(ReactRouter).find((val) =>
+  /return (\w)\?\1\.params:{}/.test(`${val}`)
+) as <T>() => T