Add java.util.jar.Attributes to classes

[jeroenvandijk]

Is your feature request related to a problem? Please describe.

I'm trying to the get Main-Class attribute from a Jar file, specifically for this issue in bbin (babashka/bbin#47) The class java.util.jar.Attributes and specifically the method java.util.jar.Attributes/getValue seems to be missing
in the classes list

Describe the solution you'd like
Adding the class to the list

Describe alternatives you've considered
The workaround is to iterate over the attributes and parse the key of the attributes for "Main-Class", see the code here

Additional context
babashka/bbin#47

Some code to see this problem in action

bb version
babashka v1.0.164

bb -e '(let [clojure-jar-path (str (System/getenv "HOME") "/.m2/repository/org/clojure/clojure/1.11.0/clojure-1.11.0.jar")
      jar-file (clojure.java.io/file clojure-jar-path)]
  (with-open [jar (java.util.jar.JarFile. jar-file)]
    (-> (java.net.URL. "jar" nil (str "file:" (.getAbsolutePath jar-file) "!/META-INF/MANIFEST.MF"))
        (clojure.java.io/input-stream)
        (java.util.jar.Manifest.)
        (.getMainAttributes)
        (.getValue "Main-Class"))))'
----- Error --------------------------------------------------------------------
Type:     java.lang.IllegalArgumentException
Message:  No matching method getValue found taking 1 args for class java.util.jar.Attributes
Location: <expr>:1:1

----- Context ------------------------------------------------------------------
1: (let [clojure-jar-path (str (System/getenv "HOME") "/.m2/repository/org/clojure/clojure/1.11.0/clojure-1.11.0.jar")
   ^--- No matching method getValue found taking 1 args for class java.util.jar.Attributes
2:       jar-file (clojure.java.io/file clojure-jar-path)]
3:   (with-open [jar (java.util.jar.JarFile. jar-file)]
4:     (-> (java.net.URL. "jar" nil (str "file:" (.getAbsolutePath jar-file) "!/META-INF/MANIFEST.MF"))
5:         (clojure.java.io/input-stream)
6:         (java.util.jar.Manifest.)

[borkdude]

PR welcome