Add a new match mode to the TaggerGetResourcesWhere snippet

[halftrainedharry]

Currently the snippet "TaggerGetResourcesWhere" can return resources where either any of the tags matches (&matchAll=`0`) or all the tags match (&matchAll=`1`).

This PR adds a new mode (&matchAll=`2`) where tags from different groups are matched with an AND condition and tags from the same group with an OR condition.

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For example:
You have two groups (color and size) with the following tags

• color
  • red
  • green
  • blue
• size
  • small
  • medium
  • large

and you want to query it with a condition like "red OR blue AND small OR large" (as described in this forum topic)