docs: add and use react-tooltip (#3176)

* chore: add react-tooltip package into docs

* chore: add react-tooltip styles globally into Layout

* chore: use react-tooltip component into docs

* fixes to the CSS

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Co-authored-by: Shahed Nasser <shahednasser@gmail.com>

www/docs/package.json

@@ -31,6 +31,7 @@
     "prism-react-renderer": "^1.3.1",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
+    "react-tooltip": "5.7.4",
     "react-transition-group": "^4.4.5",
     "react-uuid": "^2.0.0",
     "redocusaurus": "^1.4.0",