feat(glossy): adds noref|noindex modifier

Per suggestion in [#24](https://github.com/swaits/typst-collection/issues/24)

glossy/tests/noref/test.typ

@@ -0,0 +1,26 @@
+#import "/lib.typ": *
+
+// Our test glossary
+#show: init-glossary.with((
+    Normal: "this is a normal term",
+    NoRef: "this term is noref'd",
+    NoIndex: "this term is noindex'd",
+    NoRefNoIndex: "this term is noref'd and noindex'd",
+))
+
+// Configure styling
+
+#set page(margin: 1em)
+#set page(width: 3.5in)
+#set page(height: auto)
+#set text(size: 10pt)
+
+@Normal
+
+@NoRef:noref
+
+@NoIndex:noindex
+
+@NoRefNoIndex:noref:noindex
+
+#glossary()