Dilemma folder naming scheme

[bstiq]

Currently, the naming scheme is as follows:
dilemma/3x5_2
dilemma/3x5_2/assembled
dilemma/3x5_2/splinky
dilemma/3x5_3

On my side I have instead v1 and v2.
v1 having a diy and assembled version,
v2 having only an assembled version
The 3x5_3 is just a consequence of the upgrade to v2, but there's a lot of other changes.

We could change the folder structure to better reflect that:
dilemma/v1
dilemma/v1/assembled
dilemma/v1/splinky
dilemma/v2

[bstiq]

current scheme is fine