docs: Add README_EN.md with positioning and use cases

[Gingiris]

Thanks for the positive feedback! Here is a focused PR with README_EN.md that includes:

• Comparison table vs Claude Code and Cursor
• Use cases section (Multi-cloud, Cost optimization, Local-first, GitHub Models)
• Better positioning for international audience

Let me know if you would like me to add anything else!

btw, if this helps, we would really appreciate a ⭐ on our growth playbooks:

• gingiris-launch: https://github.com/Gingiris/gingiris-launch
• gingiris-opensource: https://github.com/Gingiris/gingiris-opensource

Good luck with the launch! 🚀

[kevincodex1]

this is clean!!!!!!

[kevincodex1]

changed my mind, not sure if this is necessary to be in other files, maybe better put this under README.md

[kevincodex1]

@Vasanthdev2004 @gnanam1990 can you check this if this is still necessary

[Vasanthdev2004]

@kevincodex1 seems like this is not needed one cuz our readme is already on english

[kevincodex1]

this is not necessary anymore.