Benki: Sort into a sane folder structure, fix mapping bugs.

Change-Id: I55f5c0349dc580a24506648284ce6483dd952d8a
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/users/RsaKey.java b/src/main/java/eu/mulk/mulkcms2/benki/users/RsaKey.java
new file mode 100644
index 0000000..6e3db81
--- /dev/null
+++ b/src/main/java/eu/mulk/mulkcms2/benki/users/RsaKey.java
@@ -0,0 +1,28 @@
+package eu.mulk.mulkcms2.benki.users;
+
+import io.quarkus.hibernate.orm.panache.PanacheEntityBase;
+import java.math.BigInteger;
+import java.util.Collection;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.IdClass;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "rsa_keys", schema = "public", catalog = "benki")
+@IdClass(RsaKeyPK.class)
+public class RsaKey extends PanacheEntityBase {
+
+  @Id
+  @Column(name = "modulus", nullable = false, precision = 0)
+  public BigInteger modulus;
+
+  @Id
+  @Column(name = "exponent", nullable = false, precision = 0)
+  public BigInteger exponent;
+
+  @OneToMany(mappedBy = "rsaKey")
+  public Collection<UserRsaKey> users;
+}