feat(file/poi): 新增 continew-starter-file-poi 模块（添加 ExcelImport 与 ExcelExport 注解）

1.将EasyExcel升级为FastExcel
2.新增 continew-starter-file-poi 模块（添加 ExcelImport 与 ExcelExport 注解，https://zyqok.blog.csdn.net/article/details/121994504）

continew-starter-file/continew-starter-file-poi/pom.xml

@@ -0,0 +1,39 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>top.continew</groupId>
+        <artifactId>continew-starter-file</artifactId>
+        <version>${revision}</version>
+    </parent>
+
+    <artifactId>continew-starter-file-poi</artifactId>
+    <description>ContiNew Starter 文件处理模块 - POI</description>
+
+    <dependencies>
+        <!-- 文件上传 -->
+        <dependency>
+            <groupId>org.apache.httpcomponents.client5</groupId>
+            <artifactId>httpclient5</artifactId>
+        </dependency>
+        <!-- JSON -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>jakarta.servlet</groupId>
+            <artifactId>jakarta.servlet-api</artifactId>
+        </dependency>
+        <!-- POI -->
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>5.4.1</version>
+        </dependency>
+    </dependencies>
+</project>

continew-starter-file/continew-starter-file-poi/src/main/java/top/continew/starter/file/poi/annotation/ExcelExport.java

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+package top.continew.starter.file.poi.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author jiang4yu
+ */
+@Target(ElementType.FIELD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ExcelExport {
+
+    /**
+     * 字段名称
+     */
+    String value();
+
+    /**
+     * 导出排序先后: 数字越小越靠前（默认按Java类字段顺序导出）
+     */
+    int sort() default 0;
+
+    /**
+     * 导出映射，格式如：0-未知;1-男;2-女
+     */
+    String kv() default "";
+
+    /**
+     * 导出模板示例值（有值的话，直接取该值，不做映射）
+     */
+    String example() default "";
+
+}

continew-starter-file/continew-starter-file-poi/src/main/java/top/continew/starter/file/poi/annotation/ExcelImport.java

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+package top.continew.starter.file.poi.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author jiang4yu
+ */
+@Target(ElementType.FIELD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ExcelImport {
+
+    /**
+     * 字段名称
+     */
+    String value();
+
+    /**
+     * 导出映射，格式如：0-未知;1-男;2-女
+     */
+    String kv() default "";
+
+    /**
+     * 是否为必填字段（默认为非必填）
+     */
+    boolean required() default false;
+
+    /**
+     * 最大长度（默认255）
+     */
+    int maxLength() default 255;
+
+    /**
+     * 导入唯一性验证（多个字段则取联合验证）
+     */
+    boolean unique() default false;
+
+}

continew-starter-file/continew-starter-file-poi/src/main/java/top/continew/starter/file/poi/model/ExcelClassField.java

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+package top.continew.starter.file.poi.model;
+
+import java.util.LinkedHashMap;
+
+/**
+ * @author jiang4yu
+ */
+public class ExcelClassField {
+
+    /**
+     * 字段名称
+     */
+    private String fieldName;
+
+    /**
+     * 表头名称
+     */
+    private String name;
+
+    /**
+     * 映射关系
+     */
+    private LinkedHashMap<String, String> kvMap;
+
+    /**
+     * 示例值
+     */
+    private Object example;
+
+    /**
+     * 排序
+     */
+    private int sort;
+
+    /**
+     * 是否为注解字段：0-否，1-是
+     */
+    private int hasAnnotation;
+
+    public String getFieldName() {
+        return fieldName;
+    }
+
+    public void setFieldName(String fieldName) {
+        this.fieldName = fieldName;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public LinkedHashMap<String, String> getKvMap() {
+        return kvMap;
+    }
+
+    public void setKvMap(LinkedHashMap<String, String> kvMap) {
+        this.kvMap = kvMap;
+    }
+
+    public Object getExample() {
+        return example;
+    }
+
+    public void setExample(Object example) {
+        this.example = example;
+    }
+
+    public int getSort() {
+        return sort;
+    }
+
+    public void setSort(int sort) {
+        this.sort = sort;
+    }
+
+    public int getHasAnnotation() {
+        return hasAnnotation;
+    }
+
+    public void setHasAnnotation(int hasAnnotation) {
+        this.hasAnnotation = hasAnnotation;
+    }
+
+}