Revert "Revert "feat: 第一个可以用的 ink 组件抽象 (#158)" (#175)"

This reverts commit 88d4c3ba24.

packages/@ant/ink/src/components/AppContext.ts

@@ -0,0 +1,21 @@
+import { createContext } from 'react'
+
+export type Props = {
+  /**
+   * Exit (unmount) the whole Ink app.
+   */
+  readonly exit: (error?: Error) => void
+}
+
+/**
+ * `AppContext` is a React context, which exposes a method to manually exit the app (unmount).
+ */
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const AppContext = createContext<Props>({
+  exit() {},
+})
+
+// eslint-disable-next-line custom-rules/no-top-level-side-effects
+AppContext.displayName = 'InternalAppContext'
+
+export default AppContext