chore: move tests out of core and into the top level crate

This commit moves the tests out of core so rust analyzer
is happier with the workspace.

tests/README.md

@@ -0,0 +1,53 @@
+# Testing of Dioxus core
+
+
+NodeFactory
+- [] rsx, html, NodeFactory generate the same structures
+
+Diffing
+- [x] create elements
+- [x] create text
+- [x] create fragments
+- [x] create empty fragments (placeholders)
+- [x] diff elements
+- [x] diff from element/text to fragment
+- [x] diff from element/text to empty fragment
+- [x] diff to element with children works too
+- [x] replace with works forward
+- [x] replace with works backward
+- [x] un-keyed diffing
+- [x] keyed diffing
+- [x] keyed diffing out of order
+- [x] keyed diffing with prefix/suffix
+- [x] suspended nodes work 
+
+Lifecycle
+- [] Components mount properly
+- [] Components create new child components
+- [] Replaced components unmount old components and mount new
+- [] Post-render effects are called
+- [] 
+
+
+Shared Context
+- [] Shared context propagates downwards
+- [] unwrapping shared context if it doesn't exist works too
+
+Suspense
+- [] use_suspense generates suspended nodes
+
+
+Hooks 
+- [] Drop order is maintained
+- [] Shared hook state is okay
+- [] use_hook works
+- [] use_ref works
+- [] use_noderef works
+- [] use_provide_state
+- [] use_consume_state
+
+
+VirtualDOM API
+- [] work
+- [] rebuild
+- [] change props