Improve the network search experience

Improve the network search experience to deliver improvements and better functionality. As a member, I want to see more relevant search results, so that I can find information on the site faster. We want to improve Network Search on the BuddyBoss Platform by: - Allowing to show results by most relevant - Improving the speed to get results, also through the API - Improving the UX / UI of the screens, based on the capabilities available to us We'll start by investing implementing elastic search and go from there. If we do, we also need to consider migrations and hooks for when content is saved, updated or deleted. ## Updates: - Moved this to Product Development board from Product Solutions. - Ayush highlighted unoptimised SQL queries in the following document, which should be addressed by this task during the refactoring. span data-preserve-white-space/span