Chore: noImplictAny no errors left (#18303)

* Add types and rewrite datasourceChanged to async/await

public/app/features/dashboard/components/AddPanelWidget/AddPanelWidget.tsx

@@ -16,6 +16,8 @@ import { DashboardModel } from '../../state';
 import { LS_PANEL_COPY_KEY } from 'app/core/constants';
 import { LocationUpdate } from '@grafana/runtime';
 
+export type PanelPluginInfo = { id: any; defaults: { gridPos: { w: any; h: any }; title: any } };
+
 export interface Props {
   panel: PanelModel;
   dashboard: DashboardModel;
@@ -26,7 +28,7 @@ export interface State {
 }
 
 export class AddPanelWidget extends React.Component<Props, State> {
-  constructor(props) {
+  constructor(props: Props) {
     super(props);
     this.handleCloseAddPanel = this.handleCloseAddPanel.bind(this);
 
@@ -58,7 +60,7 @@ export class AddPanelWidget extends React.Component<Props, State> {
     return _.sortBy(copiedPanels, 'sort');
   }
 
-  handleCloseAddPanel(evt) {
+  handleCloseAddPanel(evt: any) {
     evt.preventDefault();
     this.props.dashboard.removePanel(this.props.panel);
   }
@@ -93,7 +95,7 @@ export class AddPanelWidget extends React.Component<Props, State> {
     reduxStore.dispatch(updateLocation(location));
   };
 
-  onPasteCopiedPanel = panelPluginInfo => {
+  onPasteCopiedPanel = (panelPluginInfo: PanelPluginInfo) => {
     const dashboard = this.props.dashboard;
     const { gridPos } = this.props.panel;
 
@@ -132,7 +134,7 @@ export class AddPanelWidget extends React.Component<Props, State> {
     dashboard.removePanel(this.props.panel);
   };
 
-  renderOptionLink = (icon: string, text: string, onClick) => {
+  renderOptionLink = (icon: string, text: string, onClick: any) => {
     return (
       <div>
         <a