Add missing typescript inputValue to Select to enable placeholder to display for type string

Reason: RC-Select has this parameter to accept string value and it will
        be a quick-fix to enable Typescript to acept inputValue.

Note:
- Added parameter in Documentation

components/select/index.en-US.md

@@ -54,6 +54,7 @@ Select component to select value from options.
 | menuItemSelectedIcon | The custom menuItemSelected icon with multiple options | ReactNode | - | 3.11.0 |
 | tokenSeparators | Separator used to tokenize on tag/multiple mode | string\[] |  |  |
 | value | Current selected option. | string\|string\[]\<br />number\|number\[]\<br />LabeledValue\|LabeledValue[] | - |  |
+| inputValue | Current search text | string | - |  |
 | onBlur | Called when blur | function | - |  |
 | onChange | Called when select an option or input value change, or value of input is changed in combobox mode | function(value, option:Option/Array&lt;Option>) | - |  |
 | onDeselect | Called when a option is deselected, param is the selected option's value. Only called for multiple or tags, effective in multiple or tags mode only. | function(string\|number\|LabeledValue) | - |  |

components/select/index.tsx

@@ -53,6 +53,7 @@ export type SelectValue = string | string[] | number | number[] | LabeledValue |
 
 export interface SelectProps<T = SelectValue> extends AbstractSelectProps {
   value?: T;
+  inputValue?: string;
   defaultValue?: T;
   mode?: 'default' | 'multiple' | 'tags' | 'combobox' | string;
   optionLabelProp?: string;