Chore: noImplictAny no errors left (#18303)

* Add types and rewrite datasourceChanged to async/await

packages/grafana-ui/src/components/Graph/Graph.tsx

@@ -58,7 +58,7 @@ export class Graph extends PureComponent<GraphProps> {
       }),
       yAxisConfig => yAxisConfig.index
     );
-    const flotOptions = {
+    const flotOptions: any = {
       legend: {
         show: false,
       },

packages/grafana-ui/src/components/Input/Input.tsx

@@ -27,7 +27,7 @@ export class Input extends PureComponent<Props, State> {
     className: '',
   };
 
-  state = {
+  state: State = {
     error: null,
   };
 

packages/grafana-ui/src/components/SetInterval/SetInterval.tsx

@@ -76,7 +76,7 @@ export class SetInterval extends PureComponent<Props> {
     this.propsSubject.unsubscribe();
   }
 
-  render() {
+  render(): null {
     return null;
   }
 }

packages/grafana-ui/src/types/datasource.ts

@@ -210,7 +210,7 @@ export abstract class DataSourceApi<
   /**
    * Get tag keys for adhoc filters
    */
-  getTagKeys?(options: any): Promise<MetricFindValue[]>;
+  getTagKeys?(options?: any): Promise<MetricFindValue[]>;
 
   /**
    * Get tag values for adhoc filters