[v5] Major utils rewrite (#1902)

* ref: Move ExtendedError to a types package

* ref: Remove assign util in favor of Object.assign

* ref: Pass Event to sendEvent instead of just a body

* ref: Remove isArray and isNaN utils

* ref: Rewrite normalization and removed unused utils

* Utils rewamp changelog

Author: kamilogorek

CHANGELOG.md

@@ -29,7 +29,8 @@ since we removed some methods from the public API and removed some classes from
 - **breaking** [utils] ref: Rename `limitObjectDepthToSize` to `normalizeToSize` and rewrite its internals
 - **breaking** [utils] ref: Rename `safeNormalize` to `normalize` and rewrite its internals
 - **breaking** [utils] ref: Remove `serialize`, `deserialize`, `clone` and `serializeObject` functions
-- **breaking** [utils] ref: Rewrite normalization functions by removing most of them and leaving just `normalize` and `normalizeToSize`
+- **breaking** [utils] ref: Rewrite normalization functions by removing most of them and leaving just `normalize` and
+  `normalizeToSize`
 
 ## 4.6.2