fix(clients): repair Python & Rust tests, add container test orchestration

- Python: fix wire protocol test method names (bool_val -> bool, etc.)
- Python: make integration tests and example fully async with pytest-asyncio
- Rust: add tokio dev-dependency and convert integration tests to async/await
- Rust: update ping_test example to async
- Nim: remove committed ELF build artifact
- Docker: add BARADB_HOST/BARADB_PORT env vars to test containers
- Docker: fix docker-compose.test.yml usage (remove --abort-on-container-exit)
- Add scripts/test-clients.sh for sequential client test runs
- Remove docker-compose.test.yml from .gitignore so it is tracked
- Fix repository URLs in Python and Rust READMEs

clients/javascript/tests/integration.test.js

@@ -8,8 +8,8 @@ const assert = require('node:assert');
 const net = require('net');
 const { Client, WireValue, QueryBuilder } = require('../baradb');
 
-const HOST = 'localhost';
-const PORT = 9472;
+const HOST = process.env.BARADB_HOST || 'localhost';
+const PORT = parseInt(process.env.BARADB_PORT || '9472', 10);
 
 function serverAvailable() {
   return new Promise((resolve) => {