Document how SearchTags work

src/main/java/net/wurstclient/SearchTags.java

@@ -12,6 +12,28 @@
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * Adds search tags to a Wurst feature so that it can be found through the
+ * search bar in the Navigator GUI.
+ *
+ * <p>
+ * Navigator can already find features by their name and description, so
+ * repeating that information in the search tags is pointless. However, names
+ * and descriptions of settings are not used by Navigator, so repeating those
+ * can make sense if people are likely to search for them.
+ *
+ * <p>
+ * Navigator is not case-sensitive, so for example "NukerLegit" and "nukerlegit"
+ * are treated the same. However, Navigator struggles with spaces and the order
+ * of words, for example "NukerLegit", "Nuker Legit" and "Legit Nuker" are all
+ * treated differently.
+ *
+ * <p>
+ * By convention, search tags with spaces should be written in lower case and
+ * search tags without spaces should be written in camel case. For example,
+ * "NukerLegit" and "nuker legit". This is not enforced, but it makes the
+ * code easier to read.
+ */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
 public @interface SearchTags