Add license header to provider

Author: str4d

src/net/i2p/crypto/eddsa/EdDSASecurityProvider.java

@@ -1,3 +1,14 @@
+/**
+ * EdDSA-Java by str4d
+ *
+ * To the extent possible under law, the person who associated CC0 with
+ * EdDSA-Java has waived all copyright and related or neighboring rights
+ * to EdDSA-Java.
+ *
+ * You should have received a copy of the CC0 legalcode along with this
+ * work. If not, see <https://creativecommons.org/publicdomain/zero/1.0/>.
+ *
+ */
 package net.i2p.crypto.eddsa;
 
 import java.security.AccessController;