feat: initialize OneOSS Hydrogen Box project

Set up the project structure using Vite, React, and Tailwind CSS. Added initial landing page components, assets, and build configuration for the OneOSS Hydrogen Safety & Carbon Factor Box application.

.gitignore

@@ -0,0 +1,8 @@
+node_modules/
+build/
+dist/
+coverage/
+.DS_Store
+*.log
+.env*
+!.env.example