Use AbstractClient from flipper-frontend-core in fliper-ui-core

Summary: This stack attempts to start using flipper-frontend-core from flipper-ui-core. Currently, flipper-frontend-core contains lots of copy-pasted code from flipper-ui-core.

Reviewed By: lblasa

Differential Revision: D37139198

fbshipit-source-id: 042db7492c550e10ea72c32fd15001c141bf53f9

desktop/flipper-ui-core/src/deeplink.tsx

@@ -101,12 +101,16 @@ export async function handleDeeplink(
     const selectedClient = getAllClients(store.getState().connections).find(
       (c) =>
         c.query.app === match[0] &&
+        // TODO: Remove at the end of migration
+        // @ts-expect-error
         (selectedDevice == null || c.device === selectedDevice),
     );
 
     store.dispatch(
       selectPlugin({
         selectedAppId: selectedClient?.id,
+        // TODO: Remove at the end of migration
+        // @ts-expect-error
         selectedDevice: selectedClient ? selectedClient.device : selectedDevice,
         selectedPlugin: match[1],
         deepLinkPayload,