PROD-I-769 Section Templates - Bulk Management & Other Enhancements

Team, while we wait on Proposal Builder 2.0, can we try to get the Section templates to be a little more organized. PFB a video snippet highlighting the same summarized below - https://player.vimeo.com/video/652396524 ( Summary: 1. Saving a section without the associated sub sections does the following; * Stores only that section as a Section Template * When we apply or import the same section back from within the Templates, it brings along the sub sections which in the first place couldn't be edited within the Section Templates. 2. Saving a section along with the sub sections does the following (shown at the same level of hierarchy); * Stores the sections and sub sections as separate Section Templates * When we apply or import the section or