feat(components): 添加 Input 组件

- 实现了一个通用的 Input 组件，支持多种变体和自定义样式
- 组件属性包括 name、variant、left、right、value、defaultValue 等
- 支持 onInput 事件处理
- 优化了组件的默认值设置和响应式行为

src/components/Input.tsx

@@ -0,0 +1,73 @@
+import cx from 'clsx';
+import { isNotNil } from 'es-toolkit';
+import { Component, createEffect, createSignal, JSX, mergeProps, onMount, Show } from 'solid-js';
+
+interface InputProps extends JSX.HTMLAttributes<HTMLInputElement> {
+  name?: string;
+  variant?: 'normal' | 'underlined' | 'immersive';
+  left?: JSX.Element;
+  right?: JSX.Element;
+  value?: string;
+  defaultValue?: string;
+  placeholder?: string;
+  disabled?: boolean;
+  onInput?: (value: string | null) => void;
+  wrapperClass?: JSX.HTMLAttributes<HTMLDivElement>['class'];
+  inputClass?: JSX.HTMLAttributes<HTMLInputElement>['class'];
+}
+
+const Input: Component<InputProps> = (props) => {
+  const mProps = mergeProps<InputProps[]>(
+    {
+      variant: 'normal',
+      disabled: false,
+      placeholder: '',
+    },
+    props,
+  );
+  const [internalValue, setInternalValue] = createSignal<string>('');
+  onMount(() => {
+    if (isNotNil(mProps.defaultValue)) {
+      setInternalValue(mProps.defaultValue);
+    }
+  });
+  createEffect(() => {
+    if (isNotNil(mProps.value) && mProps.value !== internalValue()) {
+      setInternalValue(mProps.value);
+    }
+  });
+
+  const handleInput: JSX.EventHandler<HTMLInputElement, InputEvent> = (evt) => {
+    const value = evt.currentTarget.value;
+    setInternalValue(value);
+    mProps.onInput?.(value);
+  };
+
+  return (
+    <div
+      aria-disabled={mProps.disabled}
+      class={cx(
+        'flex flex-row items-center gap-2 min-h-[1em] px-3 py-1.5',
+        mProps.variant === 'normal' &&
+          'rounded-sm bg-neutral text-on-neutral aria-disabled:cursor-not-allowed aria-disabled:bg-neutral-disabled aria-disabled:text-on-neutral-disabled disabled:bg-neutral-disabled disabled:text-on-neutral-disabled',
+        mProps.variant === 'underlined' &&
+          'border-b border-solid pb-[calc(var(--spacing)*1.5-1px)] border-on-surface text-on-surface aria-disabled:border-neutral-disabled aria-disabled:text-neutral-disabled',
+        mProps.variant === 'immersive' && 'text-on-surface aria-disabled:text-neutral-disabled',
+        mProps.wrapperClass,
+      )}>
+      <Show when={isNotNil(mProps.left)}>{mProps.left}</Show>
+      <input
+        name={mProps.name}
+        type={mProps.type}
+        placeholder={mProps.placeholder}
+        disabled={mProps.disabled}
+        value={internalValue()}
+        class={cx('min-h-[1em] grow focus:outline-none placeholder:italic', mProps.inputClass)}
+        onInput={handleInput}
+      />
+      <Show when={isNotNil(mProps.right)}>{mProps.right}</Show>
+    </div>
+  );
+};
+
+export default Input;