add gen_key command

abra.sh

@@ -41,3 +41,12 @@ setup_db() {
 
     echo "Database setup complete. <3"
 }
+
+gen_key() {
+    file_env "DB_PASSWORD"
+    file_env "CRYPTO_KEY"
+    file_env "SECRET_KEY"
+    file_env "LDAP_BIND_PASSWORD"
+
+    flask cryptokey create
+}