docs: add asciidoc docs for use with refinedsites

docs/pages/utility/index.adoc

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+= Utility
+
+- xref:quartz-enriched-iron.adoc[]
+- xref:block-of-quartz-enriched-iron.adoc[]
+- xref:silicon.adoc[]
+- xref:cut-silicon.adoc[]
+- xref:wrench.adoc[]
+- xref:cutting-tool.adoc[]
+- xref:filter.adoc[]
+- xref:machine-casing.adoc[]
+- xref:solderer.adoc[]
+
+== Raw Processors
+
+- xref:processor-binding.adoc[]
+- xref:raw-basic-processor.adoc[]
+- xref:raw-improved-processor.adoc[]
+- xref:raw-advanced-processor.adoc[]
+
+== Processors
+
+- xref:basic-processor.adoc[]
+- xref:improved-processor.adoc[]
+- xref:advanced-processor.adoc[]
+
+== Cores
+
+- xref:construction-core.adoc[]
+- xref:destruction-core.adoc[]
+
+== Covers
+
+- xref:cover.adoc[]
+- xref:hollow-cover.adoc[]