feat(input/docs): 添加en-US新的输入示例和选择全部功能

Author: xueyuan

packages/varlet-ui/src/input/docs/en-US.md

@@ -25,6 +25,13 @@ const value11 = ref('')
 const value12 = ref('')
 const value13 = ref('')
 const value14 = ref('')
+const value15 = ref('')
+const value16 = ref('')
+const inputRef = ref()
+
+const selectAll = () => {
+  inputRef.value?.select()
+}
 </script>
 
 <template>
@@ -69,6 +76,19 @@ const value14 = ref('')
     <var-input placeholder="Textarea" textarea v-model="value10" />
     <var-input placeholder="Small Size" size="small" v-model="value11" />
     <var-input placeholder="Removes whitespace from both ends of this string" v-model.trim="value12" />
+    <var-input 
+      placeholder="Try pressing Enter" 
+      v-model="value15"
+      @enter="() => {}"
+    />
+    <var-space>
+      <var-input 
+        ref="inputRef"
+        placeholder="Enter text and click the button to select all" 
+        v-model="value16"
+      />
+      <var-button type="primary" @click="selectAll">Select All</var-button>
+    </var-space>
   </var-space>
 </template>
 
@@ -104,6 +124,13 @@ const value11 = ref('')
 const value12 = ref('')
 const value13 = ref('')
 const value14 = ref('')
+const value15 = ref('')
+const value16 = ref('')
+const inputRef = ref()
+
+const selectAll = () => {
+  inputRef.value?.select()
+}
 </script>
 
 <template>
@@ -154,6 +181,19 @@ const value14 = ref('')
     <var-input variant="outlined" placeholder="Textarea" textarea v-model="value10" />
     <var-input variant="outlined" placeholder="Small Size" size="small" v-model="value11" />
     <var-input variant="outlined" placeholder="Removes whitespace from both ends of this string" v-model.trim="value12" />
+    <var-input 
+      placeholder="Try pressing Enter" 
+      v-model="value15"
+      @enter="() => {}"
+    />
+    <var-space>
+      <var-input 
+        ref="inputRef"
+        placeholder="Enter text and click the button to select all" 
+        v-model="value16"
+      />
+      <var-button type="primary" @click="selectAll">Select All</var-button>
+    </var-space>
   </var-space>
 </template>