docs: add asciidoc docs for use with refinedsites

docs/pages/networking/detector.adoc

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+= Detector
+:icon: detector.png
+:from: v0.3.0-alpha
+
+The {doctitle} is a block that emits a redstone signal if an item, or fluid count matches a given amount.
+
+It is also possible to be NBT or damage sensitive.
+
+== Types of criteria
+
+[cols="1,1"]
+|===
+|Criteria|Explanation
+
+|<|Emits a signal when lower than the given amount
+|>|Emits a signal when higher than the given amount
+|=|Emits a signal when equal to the given amount
+|===
+
+== Checking the total count in the storage
+
+When no item/fluid, is specified, the criteria won't care about the count of a specific item/fluid, but rather the count of all items/fluids, in the storage.
+
+== Amounts in fluid mode
+
+When the {doctitle} is in fluid mode, the amount given is in millibuckets (mB).
+
+If you want to check for 1 bucket of a fluid, use 1000, not 1.
+
+include::../../partials/recoloring.adoc[]