Add TextInput's inputMode TypeScript types (facebook#35987)

Summary:
Forward-porting DefinitelyTyped/DefinitelyTyped#64100

## Changelog

[GENERAL] [FIXED] - Add `TextInput`'s `inputMode` TypeScript types

Pull Request resolved: facebook#35987

Test Plan: - [x] DefinitelyTyped/DefinitelyTyped#64100 green

Reviewed By: christophpurrer

Differential Revision: D42799862

Pulled By: jacdebug

fbshipit-source-id: b387fd8bc53e66d6125fee810862de3e292e6e74

Libraries/Components/TextInput/TextInput.d.ts

@@ -45,6 +45,16 @@ export type KeyboardTypeOptions =
   | KeyboardTypeAndroid
   | KeyboardTypeIOS;
 
+export type InputModeOptions =
+  | 'none'
+  | 'text'
+  | 'decimal'
+  | 'numeric'
+  | 'tel'
+  | 'search'
+  | 'email'
+  | 'url';
+
 export type ReturnKeyType = 'done' | 'go' | 'next' | 'search' | 'send';
 export type ReturnKeyTypeAndroid = 'none' | 'previous';
 export type ReturnKeyTypeIOS =
@@ -588,6 +598,11 @@ export interface TextInputProps
    */
   keyboardType?: KeyboardTypeOptions | undefined;
 
+  /**
+   * Works like the inputmode attribute in HTML, it determines which keyboard to open, e.g. numeric and has precedence over keyboardType.
+   */
+  inputMode?: InputModeOptions | undefined;
+
   /**
    * Limits the maximum number of characters that can be entered.
    * Use this instead of implementing the logic in JS to avoid flicker.