Creates a new file with certificate and a corresponding key.
`Command syntax:`
```actionscript
cellframe-node-tool cert create <cert name> <sign type>
```
`Options:`
```actionscript
<cert name> - name of the certificate
<sign type> - type of signature encryption
```
### Usage Example
`Command:`
```actionscript
cellframe-node-tool cert create railgun.root.pvt.0 sig_dil
```
`Response:`
```
A certificate with a public key has been created.
```