[APP-8686] Add GetAppBranding API (#579)

Co-authored-by: Naveed Jooma <naveed@viam.com>

Author: JosephBorodach

src/app/app-client.spec.ts

@@ -2034,4 +2034,39 @@ describe('AppClient tests', () => {
       });
     });
   });
+
+  describe('getAppBranding tests', () => {
+    beforeEach(() => {
+      mockTransport = createRouterTransport(({ service }) => {
+        service(AppService, {
+          getAppBranding: () =>
+            new pb.GetAppBrandingResponse({
+              logoPath: '/branding/logo.png',
+              textCustomizations: {
+                machinePicker: new pb.TextOverrides({
+                  fields: {
+                    heading: 'Welcome',
+                    subheading: 'Select your machine.',
+                  },
+                }),
+              },
+            }),
+        });
+      });
+    });
+
+    it('getAppBranding', async () => {
+      const response = await subject().getAppBranding(
+        'publicNamespace',
+        'appName'
+      );
+      expect(response.logoPath).toEqual('/branding/logo.png');
+      expect(response.textCustomizations.machinePicker!.fields.heading).toEqual(
+        'Welcome'
+      );
+      expect(
+        response.textCustomizations.machinePicker!.fields.subheading
+      ).toEqual('Select your machine.');
+    });
+  });
 });

src/app/app-client.ts

@@ -13,6 +13,7 @@ import {
   Fragment,
   FragmentVisibility,
   GetAppContentResponse,
+  GetAppBrandingResponse,
   GetRobotPartLogsResponse,
   GetRobotPartResponse,
   GetRobotPartByNameAndLocationResponse,
@@ -2213,4 +2214,30 @@ export class AppClient {
       data: Struct.fromJson(data),
     });
   }
+
+  /**
+   * Retrieves the app branding for an organization/app.
+   *
+   * @example
+   *
+   * ```ts
+   * const branding = await appClient.getAppBranding(
+   *   '<YOUR-PUBLIC-NAMESPACE>',
+   *   '<YOUR-APP-NAME>'
+   * );
+   * ```
+   *
+   * For more information, see [App
+   * API](https://docs.viam.com/dev/reference/apis/fleet/#getappbranding).
+   *
+   * @param publicNamespace The public namespace of the organization
+   * @param name The name of the app
+   * @returns The branding information for the app
+   */
+  async getAppBranding(
+    publicNamespace: string,
+    name: string
+  ): Promise<GetAppBrandingResponse> {
+    return this.client.getAppBranding({ publicNamespace, name });
+  }
 }