Security for OPC UA

[danielpeintner]

According to https://github.com/node-opcua/node-opcua the library supports several "Security Policies" and "Authentication"

In node-wot the code doesn't do anything

node-wot/packages/binding-opcua/src/opcua-protocol-client.ts

Lines 474 to 477 in 3325e12

	setSecurity(metadata: SecurityScheme[], credentials?: unknown): boolean {
	return true;
	// throw new Error("Method not implemented.");
	}