feat: 添加.gitignore文件并清理编译产物

🔧 新增功能:
- 添加完整的.gitignore文件，覆盖所有编译产物和临时文件
- 从Git跟踪中移除Maven target目录下的编译产物
- 从Git跟踪中移除日志文件和临时文件

📁 忽略文件类型:
- Maven编译产物 (target/**, *.jar, *.war等)
- 日志文件 (logs/, *.log, *.log.*)
- IDE文件 (.idea/, *.iml, .vscode/等)
- Node.js文件 (node_modules/, dist/, .env等)
- 操作系统文件 (.DS_Store, Thumbs.db等)
- 临时文件 (*.tmp, *.bak, *.swp等)
- 部署包 (packages/, *.tar.gz, *.zip等)

✨ 优化效果:
- 减少仓库大小，提高克隆速度
- 避免提交不必要的编译产物
- 保持仓库整洁，只包含源代码
- 防止敏感配置文件意外提交

backend/emotion-common/target/maven-archiver/pom.properties

@@ -1,3 +0,0 @@
-artifactId=emotion-common
-groupId=com.emotionmuseum
-version=1.0.0

backend/emotion-common/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst

@@ -1,15 +0,0 @@
-com/emotionmuseum/common/util/JwtUtil.class
-com/emotionmuseum/common/handler/EmotionMetaObjectHandler.class
-com/emotionmuseum/common/result/Result.class
-com/emotionmuseum/common/util/HttpUtil.class
-com/emotionmuseum/common/util/SnowflakeIdGenerator.class
-com/emotionmuseum/common/interceptor/UserContextInterceptor.class
-com/emotionmuseum/common/entity/BaseEntity.class
-com/emotionmuseum/common/config/SnowflakeConfig.class
-com/emotionmuseum/common/config/WebMvcConfig.class
-com/emotionmuseum/common/result/ResultCode.class
-com/emotionmuseum/common/handler/EmotionMetaObjectHandler$UserContextHolder.class
-com/emotionmuseum/common/dto/PageQuery.class
-com/emotionmuseum/common/util/UserContextUtil.class
-com/emotionmuseum/common/config/RestTemplateConfig.class
-com/emotionmuseum/common/config/MybatisPlusConfig.class

backend/emotion-common/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

@@ -1,14 +0,0 @@
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/entity/BaseEntity.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/util/JwtUtil.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/util/HttpUtil.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/config/WebMvcConfig.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/result/ResultCode.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/interceptor/UserContextInterceptor.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/config/SnowflakeConfig.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/result/Result.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/dto/PageQuery.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/handler/EmotionMetaObjectHandler.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/util/UserContextUtil.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/config/RestTemplateConfig.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/config/MybatisPlusConfig.java
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/main/java/com/emotionmuseum/common/util/SnowflakeIdGenerator.java

backend/emotion-common/target/maven-status/maven-compiler-plugin/testCompile/default-testCompile/createdFiles.lst

@@ -1 +0,0 @@
-com/emotionmuseum/common/util/SnowflakeIdGeneratorTest.class

backend/emotion-common/target/maven-status/maven-compiler-plugin/testCompile/default-testCompile/inputFiles.lst

@@ -1 +0,0 @@
-/Users/huazhongmin/peanut/AppleDevelop/EmotionMuseum/backend/emotion-common/src/test/java/com/emotionmuseum/common/util/SnowflakeIdGeneratorTest.java