move docs

docs/dev_notes/Signal Dereferencer

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+I need some sort of signal "dereferencer" that can be easily used to translate references
+to stuff via a normalized interface.
+
+For example, if RDL defines:
+    my_field->next = my_other_field
+Then in Python (or a template) I could do:
+    x = my_field.get_property('next')
+    y = dereferencer.get(x)
+and trust that I'll get a value/identifier/whatever that accurately represents
+the value being referenced
+
+Values:
+    If X is a field reference:
+        ... that implements storage, return its DFF value reference
+        ... no storage, but has a hw input, grab from the hwif input
+        ... no storage, and no hw input, return its constant reset value?
+    If X is a property reference... do whats right...
+        my_field->anded === (&path.to.my_field)
+    if X is a static value, return the literal
+
+
+See `Hierarchy and Indexing` on details on how to build path references to stuff