Re-implement getNodeLevel in NodeSecureNetwork (vis-network workspace)

[fraxken]

Re-implement getNodeLevel function at the root of main.js into the NodeSecureNetwork class (vis-network workspace).

cli/public/main.js

Lines 176 to 192 in 72044e9

	function getNodeLevel(node) {
	const rootNode = secureDataSet.linker.get(0);
	if (node.id === rootNode.id) {
	return 0;
	}
	let level = 1;
	let currentNode = node;
	while (currentNode.usedBy[rootNode.name] === undefined) {
	currentNode = secureDataSet.linker.get(
	[...secureDataSet.linker].find(([_, { name }]) => Object.keys(currentNode.usedBy)[0] === name)[0]
	);
	level++;
	}
	return level;
	}

[iddahadev]

I can check today, I'll make a PR this evening.