Hierarchical implementation for Illuminate Adapter (#214)

* implementing Hierarchical cache for Illuminate adapter

* adding Hierarchical tests for Illuminate Adapter

* update changelog

* since we use Array implementation of Illuminate Store, we need to check if key exists & create it if not before increment it

* fixing styleci

* fixing styleci

Author: Korbeil

Tests/cache31668/cache/key

@@ -0,0 +1 @@
+a:3:{i:0;s:232:"def502006bfba19825759bb2667a7e8cda33c8bae230e5e08f29242a6794f680663313e34899067484c42acf223f293f6f5cdb848cf4020b02aac84d576f274111ad4fada7c6433f67ddbc114f283887b4138f4e13033cdd40d57a587f1d21480368580c0b6b3013fea6ed320c0f292c00750dad";i:1;a:0:{}i:2;N;}