Variables: move state tree into a keyed state (#44642)

* Variables: move state tree into a keyed state

* Update public/app/features/variables/state/transactionReducer.ts

Co-authored-by: kay delaney <45561153+kaydelaney@users.noreply.github.com>

* Chore: fix prettier error

* Chore: renamed slices and lastUid

* Chore: rename toUidAction

* Chore: rename dashboardVariableReducer

* Chore: rename state prop back to templating

* Chore renames variable.dashboardUid

* Chore: rename toDashboardVariableIdentifier

* Chore: rename getDashboardVariable

* Chore: rename getDashboardVariablesState

* Chore: rename getDashboardVariables

* Chore: some more renames

* Chore: small clean up

* Chore: small rename

* Chore: removes unused function

* Chore: rename VariableModel.stateKey

* Chore: rename KeyedVariableIdentifier.stateKey

* user essentials mob! 🔱

* user essentials mob! 🔱

* user essentials mob! 🔱

* user essentials mob! 🔱

Co-authored-by: kay delaney <45561153+kaydelaney@users.noreply.github.com>
Co-authored-by: kay delaney <kay@grafana.com>
Co-authored-by: Alexandra Vargas <alexa1866@gmail.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

public/app/features/variables/getAllVariableValuesForUrl.ts

@@ -6,7 +6,6 @@ export function getVariablesUrlParams(scopedVars?: ScopedVars): UrlQueryMap {
   const params: UrlQueryMap = {};
   const variables = getTemplateSrv().getVariables();
 
-  // console.log(variables)
   for (let i = 0; i < variables.length; i++) {
     const variable = variables[i];
     if (scopedVars && scopedVars[variable.name] !== void 0) {