Add a new e2e testing utility package to improve testing workflow

[jalal246]

No description provided.

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
packages/dflex-dnd/dist/dflex-dnd.mjs	11.03 KB (-0.07% 🔽)	221 ms (-0.07% 🔽)	55 ms (+32.65% 🔺)	275 ms
packages/dflex-core-instance/dist/dflex-core.mjs	147 B (0%)	10 ms (0%)	27 ms (-2.45% 🔽)	37 ms
packages/dflex-dom-gen/dist/dflex-dom.mjs	23 B (0%)	10 ms (0%)	29 ms (+2.86% 🔺)	39 ms
packages/dflex-store/dist/dflex-store.mjs	323 B (+0.32% 🔺)	10 ms (0%)	18 ms (-27.79% 🔽)	28 ms
packages/dflex-utils/dist/dflex-utils.mjs	250 B (+0.41% 🔺)	10 ms (0%)	41 ms (+3.53% 🔺)	51 ms
packages/dflex-draggable/dist/dflex-draggable.mjs	5.92 KB (0%)	119 ms (0%)	30 ms (-7.66% 🔽)	149 ms