WIP make part of keyAgreement public, so it can be used for shard return

briar-api/src/main/java/org/briarproject/briar/api/keyagreement/KeyAgreementUtils.java

@@ -0,0 +1,35 @@
+package org.briarproject.briar.api.keyagreement;
+
+public class KeyAgreementUtils {
+
+	public enum BluetoothDecision {
+		/**
+		 * We haven't asked the user about Bluetooth discoverability.
+		 */
+		UNKNOWN,
+
+		/**
+		 * The device doesn't have a Bluetooth adapter.
+		 */
+		NO_ADAPTER,
+
+		/**
+		 * We're waiting for the user to accept or refuse discoverability.
+		 */
+		WAITING,
+
+		/**
+		 * The user has accepted discoverability.
+		 */
+		ACCEPTED,
+
+		/**
+		 * The user has refused discoverability.
+		 */
+		REFUSED
+	}
+
+	public enum Permission {
+		UNKNOWN, GRANTED, SHOW_RATIONALE, PERMANENTLY_DENIED
+	}
+}