### Register DuloNode Hub Node

Source: https://github.com/dulonode/node-red-contrib-dulonode/blob/master/nodes/dulonode-hub.html

Registers the DuloNode Hub node type with Node-RED, defining its category, color, default properties, credentials, and input/output configuration. It also includes the `oneditprepare` function to dynamically load installation and subscription details when the node's editor is opened.

```javascript
RED.nodes.registerType('DuloNodeHub', {
    category: 'function',
    color: '#D3C89E',
    defaults: {
        name: { value: '' },
        installation: { value: 'standalone' }
    },
    credentials: {
        email: { type: 'text' },
        password: { type: 'password' }
    },
    inputs: 1,
    outputs: 1,
    icon: 'hub.svg',
    label: function() {
        return this.name || 'DuloNode Hub';
    },
    oneditprepare: function() {
        const node = this;
        let endpointPrefix = '';
        // Get instalation type
        $.getJSON('dulonode/installation')
            .done(function (data) {
                subscriptionPanel(data.installation);
            })
            .fail(function () {
                // Fallback to second endpoint
                $.getJSON('endpoint/dulonode/installation')
                    .done(function (data) {
                        subscriptionPanel(data.installation);
                    })
                    .fail(function () {
                        subscriptionPanel('standalone');
                    });
            });

        // Load subscription details
        function subscriptionPanel(installation) {
            console.log("Installation type:", installation);
            endpointPrefix = installation == 'homeassistant' ? 'endpoint/' : '';
            let plan = 'Unknown'
            $.getJSON(`${endpointPrefix}dulonode/subscription/details`)
                .done(function(data) {
                    plan = data.plan?.name || 'Unknown';
                    $('#subscription-plan').text(plan);
                    $('#subscription-plan').show();
                    if (plan == 'Free') {
                        $('#subscription-upgrade').show();
                    } else {
                        $('#subscription-manage').show();
                    }
                })
                .fail(function() {
                    $('#subscription-plan').text('Error loading plan');
                })
                .always(function() {
                    if (plan != 'Unknown') {
                        $('#subscription').show();
                        $('#subscription-loading').hide();
                    } else {
                        $('#subscription').hide();
                    }
                });

            // Handle Manage and Upgrade button clicks
            $('#subscription-manage').on('click', function() {
                window.open(`${endpointPrefix}dulonode/subscription/manage`, '_blank');
                $("#node-dialog-cancel").click();
            });
            $('#subscription-upgrade').on('click', function() {
                window.open(`${endpointPrefix}dulonode/subscription/upgrade`, '_blank');
                $("#node-dialog-cancel").click();
            });
        }
    }
});
```

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