doc: enrich build instructions

[SilverBut]

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• [x] I understand that contributing to this repository will require me to agree with the CLA

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Description

This PR adds some doc about protobuf issues, and require install grpc-web plugin.

What type of PR is this? (check all applicable)

• [ ] 🍕 Feature
• [ ] 🐛 Bug Fix
• [x] 📝 Documentation Update
• [ ] 🎨 Style
• [ ] 🧑‍💻 Code Refactor
• [ ] 🔥 Performance Improvements
• [ ] ✅ Test
• [ ] 🤖 Build
• [ ] 🔁 CI

Related Tickets & Documents

N/A

Mobile & Desktop Screenshots/Recordings

N/A

Added tests?

• [ ] 👍 yes
• [x] 🙅 no, because they aren't needed
• [ ] 🙋 no, because I need help

Added to documentation?

• [x] 📜 README.md
• [ ] 📓 tech-docs
• [ ] 🙅 no documentation needed

[github-actions[bot]]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[SilverBut]

I have read the CLA Document and I hereby sign the CLA