Add an option to not enable WAL (should help in #399)

src/config.rs

@@ -253,6 +253,9 @@ make_config! {
         extended_logging:       bool,   false,  def,    true;
         /// Log file path
         log_file:               String, false,  option;
+
+        /// Enable DB WAL |> Turning this off might lead to worse performance, but might help if using bitwarden_rs on some exotic filesystems, that do not support WAL
+        enable_db_wal:          bool,   false,  def,    true;
     },
 
     /// Yubikey settings

src/main.rs

@@ -168,12 +168,14 @@ fn check_db() {
     }
 
     // Turn on WAL in SQLite
+    if CONFIG.enable_db_wal() {
         use diesel::RunQueryDsl;
         let connection = db::get_connection().expect("Can't conect to DB");
         diesel::sql_query("PRAGMA journal_mode=wal")
             .execute(&connection)
             .expect("Failed to turn on WAL");
     }
+}
 
 fn check_rsa_keys() {
     // If the RSA keys don't exist, try to create them