Fix: do not bind 'unload tabs' and 'unload and hide' to CTRL+SHIFT+1 and CTRL+SHIFT+2 by default - those keys are used by the Firefox Containers Add-on.

This update brings several quality-of-life improvements to Hide Tabs:

• Context menu toggle: You can now enable or disable the right-click (RMB) context menu for tabs in the Preferences page.
• Shortcut settings button: A new button on the Preferences page takes you directly to Firefox’s shortcut editor for this extension (visible only for FF > 137).
• Customizable shortcuts: You can now define and use up to three shortcuts:
• Default action — hides all tabs and, if enabled, also unloads them to save memory.
• Unload all tabs — unloads every tab without hiding them.
• Unload & hide all tabs — performs both actions, regardless of your “Unload tabs” setting.

This update adds a context menu (Right Mouse Button Click) to each tab and let's you select which tabs to hide:

• Hide this tab only
• Hide all tabs except this one
• Hide all tabs

You can now also quickly access the Add-on options directly from the tab context menu by selecting "Show options." This makes it easier to adjust settings without opening the extension manager.

FIX: Fixed a bug where sometimes the extension icon was not being added to the toolbar automatically.

New option added – you can now choose to automatically unload hidden tabs.
This is off by default. You can enable it in the extension’s Preferences page (right click on the extension icon -> Preferences tab).

Unloading hidden tabs will free up memory, but keep in mind:
* Tabs will reload when you switch back to them.
* Any unsaved work in those tabs may be lost.
* Audio or running processes in hidden tabs will stop.

Use it only if you want to save memory and are okay with these limits.

This version improves user experience when restoring tabs - now only the tab created by this extension will be destroyed instead of all empty (about:blank) tabs.

Added external message handling - now other Add-ons (i.e. Gesturefy) can send the message "HIDE_TABS" to trigger this extension.

This version adds an options page where you can setup a custom URL to open instead of an empty tab when hiding tabs.