moved all crates into seperate folder + related path fixes

crates/compiler/gen_dev/src/todo.md

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+# Important things to add (Not necessarily in order)
+
+- Expand to way more builtins and assembly calls.
+- Deal with function calling, basic layouts, and all the fun basics of argument passing.
+- Add floats and some basic operations with them.
+- Add some more complex memory layouts and data types.
+- Add builtin function creation and calling.
+  For many builtins, we should only need to create them if they are used as a function pointer.
+  This may not be know at gen time for the specific function, so we might just have to add them all.
+  Otherwise, many will always be inlined.
+- Add basic const folding? It should be really easy to add as an optimization.
+  It should be a nice optimization for little cost. Just be sure to make it optional, otherwise our tests will do nothing.
+- Automatically build the zig builtins .o file and make it available here.
+  We will need to link against it and use it whenever we call specific builtins.
+- Add unwind tables and landing pads.
+- Add ability to wrap functions with exceptions or return a results.
+  Will need to start dealing with overflows and such to return errors.