Add Section Navigation feature and Responsiveness in Profile Generator

Description. Currently, the navigation experience across profile sections is not great:

• Some section IDs are not optimised for anchor-based navigation.
• The support section lacks responsiveness on smaller screens.
• Sub-sections within the skills area are not clearly defined, making navigation and readability harder.

Solution

• A dedicated sections menu for smoother navigation.
• Updated section and sub-section IDs to improve anchor linking and accessibility.
• Responsive design fixes for the support section to ensure proper rendering across devices.

Alternatives Considered

• Keeping the current structure and relying on manual scrolling, which hampers UX.
• Using external libraries for navigation, but that adds unnecessary complexity.

Additional context These changes are reflected in the following commits:

• feat: add sections menu and update section IDs for better navigation
• fix: The support section is not responsive
• fix: Added sub-sections and enhanced skills section IDs for navigation

1. Section Navigation feature

2. The support section is not responsive on smaller screens

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