Feat/db operations psc (#449)

* Add screenshot, fix wording

* Update README.md

* setting up PSC in DB.

* Add docs.

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Co-authored-by: Gorkem Cetin (BWL) <167266851+gorkem-bwl@users.noreply.github.com>

Server/models/PageSpeedCheck.js

@@ -45,3 +45,5 @@ const PageSpeedCheck = mongoose.Schema(
  */
 
 module.exports = mongoose.model("PageSpeedCheck", PageSpeedCheck);
+
+