feat!(): add custom execution context

lib/execution-context/telegraf-arguments-host.ts

@@ -0,0 +1,22 @@
+import { ArgumentsHost } from '@nestjs/common';
+import { ExecutionContextHost } from '@nestjs/core/helpers/execution-context-host';
+import { TgArgumentsHost } from './tg-arguments-host.interace';
+
+export class TelegrafArgumentsHost
+  extends ExecutionContextHost
+  implements TgArgumentsHost {
+  static create(context: ArgumentsHost): TelegrafArgumentsHost {
+    const type = context.getType();
+    const tgContext = new TelegrafArgumentsHost(context.getArgs());
+    tgContext.setType(type);
+    return tgContext;
+  }
+
+  getContext<T = any>(): T {
+    return this.getArgByIndex(0);
+  }
+
+  getNext<T = any>(): T {
+    return this.getArgByIndex(1);
+  }
+}