feat(qrlogin): 实现基于二维码的Keycloak登录功能- 添加二维码登录核心类，包括会话管理、签名验证和二维码生成

- 实现Keycloak身份提供者SPI，支持二维码登录流程
- 集成ZXing库用于二维码生成和解析
- 添加基于内存和Redis的会话存储实现
- 实现HMAC-SHA256签名算法用于请求验证
- 添加OpenAPI文档定义二维码登录接口规范- 配置Maven构建文件，包含必要的依赖和插件
- 添加IDE配置文件和项目忽略文件
- 实现JWT令牌验证和用户身份认证
- 添加会话过期清理机制和线程安全存储

pom.xml

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+
+    <groupId>top.ysit</groupId>
+    <artifactId>KeycloakQRLogin</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <keycloak.version>26.2.4</keycloak.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <!-- Keycloak Server SPI -->
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-services</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-server-spi</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.keycloak</groupId>
+            <artifactId>keycloak-server-spi-private</artifactId>
+            <version>${keycloak.version}</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- JAX-RS, JSON -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.17.2</version>
+        </dependency>
+
+
+        <!-- QR 码生成 -->
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>core</artifactId>
+            <version>3.5.3</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.zxing</groupId>
+            <artifactId>javase</artifactId>
+            <version>3.5.3</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.5.0</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals><goal>shade</goal></goals>
+                        <configuration>
+                            <createDependencyReducedPom>false</createDependencyReducedPom>
+                            <minimizeJar>false</minimizeJar>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>