Improve Open SaaS (mobile + desktop) lighthouse page rank score

[vishwamartur]

Related to #259

Improve mobile lighthouse page rank score for the Open SaaS template.

• Hero Component: Implement lazy loading for the iframe element, optimize the iframe element for better mobile performance, and update the text content to be more concise and relevant.
• Clients Component: Implement lazy loading for the images, optimize the images for better mobile performance, and update the text content to be more concise and relevant.
• Features Component: Implement lazy loading for the images, optimize the images for better mobile performance, and update the text content to be more concise and relevant.
• FAQ Component: Implement lazy loading for the images, optimize the images for better mobile performance, and update the text content to be more concise and relevant.
• Footer Component: Implement lazy loading for the images, optimize the images for better mobile performance, and update the text content to be more concise and relevant.
• Content Sections: Update the text content to be more concise and relevant.

[vincanger]

Hi @vishwamartur. Thanks for contributing, but you need to follow the instructions for making these changes against the opensaas-sh directory and the app_diff, not to the template itself. The opensaa-sh directory is the version we deploy to opensaas.sh. The template directory is the fresh template the user gets when starting a new project