Move Access & AccessReader to shared. (#5798)

* git mv

* Move Access Component & system.

- Name space changes
- Rename AccessReader to AccessReaderComponent
- Also need an abstract TryGetSlot function for SharedInventoryComponent

* better TryGetSlot

* Ah yes, tests exist.

Content.Client/Entry/IgnoredComponents.cs

@@ -46,8 +46,6 @@ namespace Content.Client.Entry
             "ResearchServer",
             "ResearchPointSource",
             "ResearchClient",
-            "Access",
-            "AccessReader",
             "IdCardConsole",
             "Airlock",
             "ThermalRegulator",