feat(inputs): add focus() method

fixes #15266
fixes #15268

core/src/components/input/input.tsx

@@ -1,4 +1,4 @@
-import { Component, Element, Event, EventEmitter, Prop, State, Watch } from '@stencil/core';
+import { Component, Element, Event, EventEmitter, Method, Prop, State, Watch } from '@stencil/core';
 
 import { Color, Mode, StyleEvent, TextFieldTypes, TextInputChangeEvent } from '../../interface';
 import { debounceEvent, deferEvent, renderHiddenInput } from '../../utils/helpers';
@@ -246,6 +246,13 @@ export class Input implements InputComponent {
     this.ionInputDidUnload.emit();
   }
 
+  @Method()
+  focus() {
+    if (this.nativeInput) {
+      this.nativeInput.focus();
+    }
+  }
+
   private emitStyle() {
     this.ionStyle.emit({
       'interactive': true,

core/src/components/input/readme.md

@@ -55,6 +55,13 @@ It is meant for text `type` inputs only, such as `"text"`, `"password"`, `"email
 | `ionStyle`          | Emitted when the styles change.          |
 
 
+## Methods
+
+| Method  | Description |
+| ------- | ----------- |
+| `focus` |             |
+
+
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