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>

.eslintrc.json

@@ -761,7 +761,8 @@
 					"vscode-textmate",
 					"vscode-oniguruma",
 					"iconv-lite-umd",
-					"jschardet"
+					"jschardet",
+					"azdataGraph"
 				]
 			},
 			{