Add Per-Toast Position Configuration

[sudhucodes]

Is your feature request related to a problem? Please describe.

Currently, toast notifications only appear in the default position. In applications with different layouts, developers may need to display notifications in specific areas of the screen (e.g., bottom-right, top-left, center, etc.) to avoid overlapping important UI elements.

Describe the solution you'd like

Add support for configuring the position of individual toast notifications.

Example:

toast.success('Message Sent!', {
  position: 'bottom-right'
})

Supported positions could include:

• top-left
• top-center
• top-right
• bottom-left
• bottom-center
• bottom-right

This would allow developers to customize notification placement on a per-toast basis instead of relying on a global configuration.

Describe alternatives you've considered

Currently, positioning can only be controlled globally or by creating custom implementations/workarounds. These approaches are less flexible when different notifications need to appear in different locations.

Additional context

This feature would improve flexibility and make the API more consistent with other toast notification libraries that support per-toast positioning.