feat: convert namespace filters supplied as strings to regexes

tools.deps users can't include a regex literal in deps.edn files. If we get a string as a namespace
filter, convert it to a regular expression.

codox/src/codox/main.clj

@@ -54,9 +54,15 @@
     (symbol? pattern) (= pattern (symbol ns-name))))
 
 (defn- filter-namespaces [namespaces ns-filters]
-  (if (and ns-filters (not= ns-filters :all))
-    (filter #(some (partial ns-matches? %) ns-filters) namespaces)
-    namespaces))
+  ;; tools.deps users can't include a regex literal in deps.edn files. If we get a string as a
+  ;; namespace filter, convert it to a regular expression.
+  (let [ns-filters (mapv (fn [ns-filter] (if (string? ns-filter)
+                                          (re-pattern ns-filter)
+                                          ns-filter))
+                         ns-filters)]
+    (if (and ns-filters (not= ns-filters :all))
+      (filter #(some (partial ns-matches? %) ns-filters) namespaces)
+      namespaces)))
 
 (defn- read-namespaces
   [{:keys [language root-path source-paths namespaces metadata exclude-vars] :as opts}]