[Suggestion]: Add tags for automaticlly generated dimensional doors

[Mentalgen]

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With Iris 1.8 around the corner, it adds the ability to use tags instead of specifying each individual block within .properties files.

Having these automatically generated doors be tagged as "#dimdoors:ag_doors" or similar would be really helpful for adding support for shaders. (as without specifying within blocks.properties or the like, we'll just see a black box of where the rift should be)

Not needing to try out every single mod that exists and adding each and every door from each mod that DimDoors would be very appreciated.