Initial commit: TFGrid Economics documentation site

- Based on working minting_plan repository
- Configured for threefold.info/economics deployment
- Added ops documentation for server deployment
- Updated baseUrl and URL configuration

.gitignore

@@ -0,0 +1,27 @@
+# Dependencies
+/node_modules
+
+# Production
+/build
+
+# Generated files
+.docusaurus
+.cache-loader
+
+# Misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# IDE
+.idea
+.vscode
+*.swp
+*.swo
+*~