Feat: Suggestion list in Explore is virtualized (#16342)

* Wip: virtualize suggestions list

* Refactor: Separate components to different files

* Refactor: Made TypeaheadItem a FunctionComponent using emotion

* Refactor: Use theme to calculate width instead of hardcoded values

* Refactor: Calculate list height and item size

* Style: Adds labels to emotion classes

* Refactor: Flattens CompletionItems to one list

* Chore: merge yarn.lock

* Refactor: Adds documentation popup on the side

* Refactor: Makes position of TypeaheadInfo dynamic

* Refactor: Calculations moved to separate file

package.json

@@ -36,6 +36,7 @@
     "@types/react-select": "^2.0.4",
     "@types/react-transition-group": "^2.0.15",
     "@types/react-virtualized": "^9.18.12",
+    "@types/react-window": "1.7.0",
     "angular-mocks": "1.6.6",
     "autoprefixer": "^9.4.10",
     "axios": "^0.18.0",
@@ -180,6 +181,7 @@
     "angular-sanitize": "1.6.6",
     "baron": "^3.0.3",
     "brace": "^0.10.0",
+    "calculate-size": "1.1.1",
     "classnames": "^2.2.6",
     "clipboard": "^2.0.4",
     "d3": "^4.11.0",
@@ -207,6 +209,7 @@
     "react-table": "^6.8.6",
     "react-transition-group": "^2.2.1",
     "react-virtualized": "^9.21.0",
+    "react-window": "1.7.1",
     "redux": "^4.0.0",
     "redux-logger": "^3.0.6",
     "redux-thunk": "^2.3.0",