Add support for Vanilla Nutrient Paste Expanded

[Sn1p3rr3c0n]

the Grinder included in Vanilla Nutrient Paste Expanded supposedly accepts input form Hoppers.
That is not entirely correct, instead of using the Vanilla system of <isHopper>true</isHopper> they implemented their own thing VNPE.CompProperties_RegisterToGrinder
That needs to be added to each building that has <isHopper>true</isHopper> in order to support said mod.

for reference patch use by VNPE

  <Operation Class="PatchOperationConditional">
    <xpath>/Defs/ThingDef[defName="Hopper"]/comps</xpath>
    <nomatch Class="PatchOperationAdd">
      <xpath>/Defs/ThingDef[defName="Hopper"]</xpath>
      <value>
        <comps>
          <li Class="VNPE.CompProperties_RegisterToGrinder" />
        </comps>
      </value>
    </nomatch>
    <match Class="PatchOperationAdd">
      <xpath>/Defs/ThingDef[defName="Hopper"]/comps</xpath>
      <value>
        <li Class="VNPE.CompProperties_RegisterToGrinder" />
      </value>
    </match>
  </Operation>

to be implemented as a patch or mayrequire