Add configuration file support

### Summary

Currently, the casbin-mesh doesn't support the configuration file, we should support this which is important, I create a draft for this:
```yml
name:

data-dir:

log:
level: info

bind-address:
- 192.168.1.10:4001
- 10.168.1.10:4002

advertise-address: 192.168.1.10:8080

endpoint:
tls:
enable: false
ca:
key:
cert:
authorization:
enable: false
authentication:
enable: false
type: basic
params:
username: root
password: root

peer:
tls:
enable: false
ca:
key:
cert:
snap-threshol: 10
snap-interval: 10
leader-lease-timeout: 0
heart-beat-timeout: 0
election-timeout: 0
apply-timeout: 0
open-timeout: 0
wait-leader: false
shutdown-on-remove: false
compression-size: 10
compression-batch: 20

pprof:
enable: false
cpu-profile:
mem-profile:
```