Two panel & two page swipe & currentPage fixes

- Pagespacing set to 0 to have similar design to figma
- Added padding to left side of left panel and right side of right panel to match figma
- getPageScrolls changed to support two page scrolling
- validateNewPage changed so that only even indexed pages can be switched to
- getPageWidthSize added for measurements, it returns half screen width when two panel is active
- onMeasure changed to use getPageWidthSize
- panelCount has been increased from 1 to 2 when two panel is active
- add feature flag for two panel home
- shouldConsumeTouch changed so not only currentpage is checked but currentpage+1 screen as well
- add one more extra check for setDropLayoutForDragObject for currentpage + 2, next to right panel
- using new grid option for two panel home screen

Test: manual
Bug: 174464115
Change-Id: I1bad7eecc67f65fb833608744a5aa5aca65373b4