Finished class "ActivityManager" structure

Signed-off-by: Valentin Popov <info@valentineus.link>

dist/types/index.d.ts

@@ -0,0 +1,18 @@
+export interface IActivitySpec {
+	readonly activity: IActivity;
+	readonly replace?: boolean;
+	readonly start?: boolean;
+	readonly subscribe?: boolean;
+}
+
+export interface IActivity {
+	readonly description: string;
+	readonly name: string;
+	readonly type?: IType;
+}
+
+export interface IType {
+	readonly explicit?: boolean;
+	readonly foreground?: boolean;
+	readonly persist?: boolean;
+}