### Description

Using the KEMI async module in Python is not possible, since the `async` word is a reserved word in Python3. This leads to a syntax error.

#### Reproduction

```python import KSR

KSR.async.task_route("") ```

### Possible Solutions

The below code works, but not sure if this is a right approach to this issue.

`KSR.__dict__["async"].task_route("my_route")`

### Additional Information

``` version: kamailio 5.6.1 (x86_64/linux) b36a13 flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: b36a13 compiled on 10:06:47 Oct 25 2022 with gcc 10.2.1 ```

``` Linux b0fe2a764c5e 5.10.124-linuxkit #1 SMP Thu Jun 30 08:19:10 UTC 2022 x86_64 GNU/Linux ```