chore: prevent launching if proxy count is 0

.gitignore

@@ -2,6 +2,7 @@
 
 # Castorsrm
 config.json
+build/
 
 # Logs
 

src/index.ts

@@ -20,6 +20,12 @@ if (fs.existsSync("config.json")) {
 // Write the new config file in case we updated something.
 await fs.promises.writeFile("config.json", config.toJSON());
 
+// Validate configuration
+if (config.proxy.count < 1) {
+    logger.error("Proxy count must be greater than 0.");
+    process.exit(1);
+}
+
 logger.level = process.env.LOG_LEVEL || config.logger.level;
 logger.info(`Logger level set to '${logger.level}'`);