Enable @typescript-eslint/explicit-member-accessibility on /src (#9785)

* Enable `@typescript-eslint/explicit-member-accessibility` on /src

* Prettier

src/autocomplete/CommandProvider.tsx

@@ -31,9 +31,9 @@ import { TimelineRenderingType } from "../contexts/RoomContext";
 const COMMAND_RE = /(^\/\w*)(?: .*)?/g;
 
 export default class CommandProvider extends AutocompleteProvider {
-    matcher: QueryMatcher<Command>;
+    public matcher: QueryMatcher<Command>;
 
-    constructor(room: Room, renderingType?: TimelineRenderingType) {
+    public constructor(room: Room, renderingType?: TimelineRenderingType) {
         super({ commandRegex: COMMAND_RE, renderingType });
         this.matcher = new QueryMatcher(Commands, {
             keys: ["command", "args", "description"],
@@ -42,7 +42,7 @@ export default class CommandProvider extends AutocompleteProvider {
         });
     }
 
-    async getCompletions(
+    public async getCompletions(
         query: string,
         selection: ISelectionRange,
         force?: boolean,
@@ -100,11 +100,11 @@ export default class CommandProvider extends AutocompleteProvider {
             });
     }
 
-    getName() {
+    public getName() {
         return "*️⃣ " + _t("Commands");
     }
 
-    renderCompletions(completions: React.ReactNode[]): React.ReactNode {
+    public renderCompletions(completions: React.ReactNode[]): React.ReactNode {
         return (
             <div
                 className="mx_Autocomplete_Completion_container_pill"