Make id optional

[risalfajar]

Can we just make id in table.column() with function accessor and table.display() optional? Since header is already unique in most cases, we can use that as default value for id.

[bryanmylee]

The only issue is that id needs to be unique because it's used for tracking columns within each group and column ordering / hiding.

header is unique in most cases, but it's also possible to have a non-text header. If we make id optional, we'd have to add a lot of complexity to the system.

[risalfajar]

Wouldn't adding more checks in DataColumn constructor suffice?

Something like:

	constructor({
		header,
		footer,
		plugins,
		cell,
		accessor,
		id,
	}: DataColumnInit<Item, Plugins, Id, Value>) {
		super({ header, footer, plugins, id: 'Initialization not complete' });
		this.cell = cell;
		if (accessor instanceof Function) {
			this.accessorFn = accessor;
		} else {
			this.accessorKey = accessor;
		}
		if (id === undefined && this.accessorKey === undefined && header === undefined) {
			throw new Error('A column id or string accessor or header is required');
		}
		this.id = (id ?? String(this.accessorKey) ?? String(header)) as Id;
	}

[bryanmylee]

That could work! Unfortunately, I've been extremely busy so this project has been on the back-burner for me.

Could you help open a PR for it? I would love to merge any PR you have if you could provide one.