Update VTR quick start guide to use yosys / parmys #2739
Description
The VTR quick start guide uses Odin II as the synthesis tool, but the yosys/parmys flow is now the default VTR flow. We should update the quick start to use yosys/parmys. The Odin II section should be moved down to a later, optional part of the quick start that just describe how to run Odin II (as the primary example of yosys/parmys would have already covered the whole flow).
Proposed Behaviour
Change all mention of Odin II to the equivalent parmys / yosys flow commands. Move the Odin II command(s) down to the end of the quick start under an Odin II section.
Current Behaviour
Odin II is the only synthesis tool described in the quick start.