Include LICENSE in the generated jar under META-INF.

See google/guava#6468 and google/guava#6477.

RELNOTES=n/a
PiperOrigin-RevId: 530400894

Author: cpovirk

jimfs/pom.xml

@@ -82,6 +82,15 @@
   </dependencies>
 
   <build>
+    <resources>
+      <resource>
+        <directory>..</directory>
+        <includes>
+          <include>LICENSE</include>
+        </includes>
+        <targetPath>META-INF</targetPath>
+      </resource>
+    </resources>
     <plugins>
       <plugin>
         <artifactId>maven-source-plugin</artifactId>