Feat/api reference curl examples (#720)

* curl reference initial

* add tooltips to curl command

* refactor copy component

* move copy to copy component

* formatting

* always include required fields

* add example values

* format svg

* fix property extraction

* explainer comment

www/reference/package.json

@@ -38,10 +38,12 @@
     "preact-render-to-string": "^5.1.19",
     "prismjs": "^1.24.1",
     "react": "^16.12.0",
+    "copy-to-clipboard": "^3.3.1",
     "react-collapsible": "^2.8.1",
     "react-dom": "^16.12.0",
     "react-helmet": "^6.1.0",
     "react-highlight.js": "^1.0.7",
+    "react-tooltip": "^4.2.10",
     "react-intersection-observer": "^8.29.0",
     "react-markdown": "^5.0.3",
     "react-virtualized": "^9.22.3",