Function loadGatewayConfig

Returns {
    lease: { allowQueryCarrier: boolean };
    listen: { host: string; port: number };
    proxy: {
        allowlistHosts: string[];
        denyByDefault: boolean;
        enabled: boolean;
        port: number;
    };
    redaction: {
        headerKeysDenylist: string[];
        jsonPathsDenylist: string[];
        textRegexDenylist: string[];
    };
    routes: {
        agentId?: string;
        openaiCompatible: boolean;
        prefix: string;
        stripPrefix: boolean;
        upstream: string;
    }[];
    streamPassthrough: boolean;
    upstreams: Record<
        string,
        {
            allowLocalhost?: boolean;
            auth: | { env: string; type: "bearer_env" }
            | { env: string; header: string; type: "header_env" }
            | { env: string; param: string; type: "query_env" }
            | { type: "none" };
            baseUrl: string;
            providerId?: string;
        },
    >;
}