restructure js bindings

bindings/javascript/packages/core/sqlite-error.ts

@@ -0,0 +1,13 @@
+export class SqliteError extends Error {
+  name: string;
+  code: string;
+  rawCode: string;
+  constructor(message, code, rawCode) {
+    super(message);
+    this.name = 'SqliteError';
+    this.code = code;
+    this.rawCode = rawCode;
+
+    (Error as any).captureStackTrace(this, SqliteError);
+  }
+}