feat: support xxl-job executor NettyHandler (#30)

Only support jdk8, in jdk11 or jdk17 env, you should use file write and use urlClassLoader to load injectorClass or else.

integration-test/build.gradle

@@ -24,6 +24,7 @@ dependencies {
     testImplementation 'org.hamcrest:hamcrest:3.0'
     testImplementation 'com.squareup.okhttp3:okhttp:4.12.0'
     testImplementation 'org.slf4j:slf4j-simple:2.0.16'
+    testImplementation 'com.alibaba.fastjson2:fastjson2:2.0.53'
     testImplementation 'net.bytebuddy:byte-buddy:1.15.1'
     testImplementation 'org.testcontainers:testcontainers:1.20.4'
     testImplementation 'org.testcontainers:junit-jupiter:1.20.4'
@@ -52,6 +53,7 @@ tasks.withType(Test).configureEach {
 idea {
     module {
         excludeDirs -= file('build')
+        excludeDirs += file('src/main')
     }
 }