Adds pfx support for custom authenticator

[HaTiIn]

With the help of a custom authenticator it is now possible to use certificate based authentication

[qlikossbuild]

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[HaTiIn]

I won't sign the CLA or anything else... but you can use my code changes for this feature.

[nilzona]

Can you share en example of how a host-config would look like that would enable this feature?

[HaTiIn]

Sure:

const appSession = openAppSession({
            appId: this.appId,
            hostConfig: {
                authType: "QlikApiTsSaEngineAuthModule",
                host,
                passphrase,
                pfx,
            },
        });

QlikApiTsSaEngineAuthModule:

...
type QlikApiTsSaEngineAuthModuleConfig = {
    pfx: Buffer;
    passphrase: string;
    host: string;
};
 async getRestCallAuthParams(
                props: GetRestCallAuthParamsProps<"QlikApiTsSaEngineAuthModule">,
            ): Promise<RestCallAuthParams> {
                return {
                    headers: {
                        "X-Qlik-User": "UserDirectory=INTERNAL; UserId=sa_engine",
                    },
                    queryParams: {},
                    credentials: "omit",
                };
            },
...