Add WSSecurity auth method

Hi team,

What we need: We are using this great package, but the 3rd party SOAP server changed the authentication method from Basic to WSSecurity. So I'm wondering if you are planning to add this authentication method...

Proposal: Keeping the SoapModuleOptions structure and add some optional properties to support other authentication methods that node-soap actually supports.

Add types to src/soap-module-options.type.ts

....
export type BasicAuth = {
  type?: string
  username: string;
  password: string;
};

export type WSSecurityType = {
  type: string
  username: string;
  password: string;
  options?: string;
};

export type WSSecurityOptions = {
  passwordType?: string;
  hasTimeStamp?: boolean;
  hasTokenCreated?: boolean;
  hasNonce?: boolean;
  mustUnderstand?: boolean,
  actor?: string;
};

export type SoapModuleOptions = {
  uri: string;
  clientName: string;
  auth?: BasicAuth | WSSecurityType;
  clientOptions?: IOptions;
};
....

Change how to set the security method in src/soap.service.ts

...
try {
  const client = await createClientAsync(options.uri, options.clientOptions);

  if (!options.auth) return client;

  const {username, password} = options.auth;

  const authMethod: ISecurity = options.auth.type === 'WSSecurity'
    ? new WSSecurity(username, password, (options.auth as WSSecurityType).options)
    : new BasicAuthSecurity(username, password);

  client.setSecurity(authMethod);

  return client;
} catch (err) {
...

Example

import { Module } from '@nestjs/common';
import { SoapModule, SoapModuleOptions } from 'nestjs-soap';
import { ConfigService, ConfigModule } from '@nestjs/config';

@Module({
  imports: [
    SoapModule.forRootAsync(
      { 
        clientName: 'MY_SOAP_CLIENT',
        imports: [ConfigModule],
        inject: [ConfigService],
        useFactory: async (
          configService: ConfigService,
        ): Promise<SoapModuleOptions> => ({
          uri: configService.get<string>('soap.uri'),
          auth: {
            type: 'WSSecurity',
            username: configService.get<string>('soap.username'),
            password: configService.get<string>('soap.password'),
            options: {.....}
          },
        }),        
      }
    ),
  ],
})
export class ExampleModule {}

What do you think? I can create a PR if you want with this proposal....

Finally, thanks for the great work on this package.

lehh / nestjs-soap

Add WSSecurity auth method #20