Add jakarta support from upstream

[rravi-sift]

Change Description

• Port of Support using JSR-303 annotations from 'jakarta.validation' package joelittlejohn/jsonschema2pojo#1280 to this fork.
  • Adds useJakartaValidation (default false) as a new configuration option across all entry points: Gradle plugin,
    Maven plugin, CLI, and Ant task
  • When true, JSR-303 annotations are sourced from jakarta.validation instead of javax.validation, affects @Valid,
    @NotNull, @Size, @Pattern, @DecimalMin, and @DecimalMax
  • Adds jakarta.validation-api:3.0.0 as a compile dependency in jsonschema2pojo-core and the root pom.xml
  • Fixes pre-existing Java 11 compilation failure in ObjectRule and EnumRule by adding javax.annotation-api:1.3.2
    (removed from JDK in Java 9+)
  • Following rules were updated:
    • ValidRule
    • RequiredRule
    • RequiredArrayRule
    • MinimumMaximumRule
    • MinLengthMaxLengthRule
    • MinItemsMaxItemsRule
    • PatternRule
• Remove circle build since CircleCI is not accessible anymore, replace it with github worklow. Also disable the failing ContentResolverTest

Verification

• Ran the unit tests

Deployment Plan

• Manually publish the jar to internal registry as done in Update gradle plugin with upstream changes #9

  mvn package -Dmaven.test.skip
  
  mvn deploy:deploy-file -DgroupId=org.jsonschema2pojo -DartifactId=jsonschema2pojo-gradle-plugin \
    -Dversion=<version> \
    -Dpackaging=jar \
    -Dfile=<jar_location>-jar-with-dependencies.jar \
    -Durl=<repo>