Enforce passing id and parentID for registered elements

[jalal246]

• Use *.test.tsx for unit testing instead of mocking DOM elements.
• Replace @swc/jest with ts-jest as the tsx kept failing for no reason. Also this Starting from v28.0.0, ts-jest will gradually opt in adoption of esbuild/swc more to improve the performance.
• keep all shared dependencies inside the package.json in the root directory.
• Refactor playground using shared DFlexDnDComponent for all cases.
• Start Using underscore-dangle for private properties.
• Remove ref from registry input options and depends only on id which is required now along with parentID.