Pushing initial work for done in Query plan feature to main (#17986)

* Adding initial boilerplate for qp2

* Adding feature flag in query plan 2

* Clearing show plan 2 after every run

* Adding sub tree cost

* removing unused method.

* WIP 2

* Adding properties view and relative cost to query plan

* WIP

* Add icons to ads

* Assing relative costs and prop windows

* Enabling older query plan again

* Making some PR fixes

* Some more PR related fixes

* Use MS org azdataGraph module

* Moving new properties to azdata proposed.

* Moving new class properties to proposed

* added missing doc component.

* Changing how azdatagraph package is referenced

* Removing empty lines, fixing localization keys

* Removing empty line, localizing some string

* making css classes more specific

* making some logic concise

* localizing some more strings

* Making more css classes specific

* Removing important tag from css props

* Checking if sum is greater than 0 to prevent divide by zero exceptions

* Fixed loader error in bootstrap

* Fixing query index

* -fixing image paths
-making css class more class specific by using nested selectors

Co-authored-by: kburtram <karlb@microsoft.com>

package.json

@@ -120,7 +120,8 @@
     "xterm-headless": "4.14.0-beta.11",
     "yauzl": "^2.9.2",
     "yazl": "^2.4.3",
-    "zone.js": "^0.8.4"
+    "zone.js": "^0.8.4",
+    "azdataGraph": "github:Microsoft/azdataGraph#0.0.5"
   },
   "devDependencies": {
     "7zip": "0.0.6",