moreplants Flowers fix Tubelib Harvester

[PLAzmA-uk]

Most flowers are compatible with the tubelib harvester, however:

moreplants:blueflower
moreplants:bigflower
moreplants:bluespike
moreplants:jungleflower
moreplants:medflower
moreplants:moonflower
moreplants:weed

are not registered with tubelib harvester.

Fixed code for:
bls_custom/blob/2732e44e2832c45dfe0d4282b49e6a9f72a44ba2/techpack/harvester.lua

is likely:

if minetest.get_modpath("moreplants") then
fn("moreplants:blueflower")
fn("moreplants:bigflower")
fn("moreplants:bluespike")
fn("moreplants:jungleflower")
fn("moreplants:medflower")
fn("moreplants:moonflower")
fn("moreplants:weed")
end

There are probably a few more plants in moreplants that are not flowers, but i dont see much point in registering them past the above.