feat(glossy): add sort: true parameter to glossary()

glossy/tests/no-sort/test.typ

@@ -0,0 +1,13 @@
+#import "/lib.typ":*
+
+#show: init-glossary.with(yaml("glossary.yml"))
+
+@first, @second, @third, @fourth, @fifth, @sixth
+
+#glossary(ignore-case: false, sort: true)
+#line(length: 20em)
+#glossary(ignore-case: true, sort: true)
+#line(length: 20em)
+#glossary(ignore-case: false, sort: false)
+#line(length: 20em)
+#glossary(ignore-case: true, sort: false)