chore: relocate workflow-compiling-service

[Yicong-Huang]

According to the reorganization plan #3846. This PR moves core/workflow-compiling-service out to root.
resolves #3860

[Copilot]

Pull Request Overview

This PR moves the core/workflow-compiling-service directory to the root level as part of a repository reorganization plan. The changes update file paths and build configurations to reflect the new directory structure.

• Updated file paths in test files to reference the new location
• Modified build configurations to work with the relocated service
• Updated GitHub Actions workflow to reflect the new structure

Reviewed Changes

Copilot reviewed 7 out of 45 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
workflow-compiling-service/src/test/scala/org/apache/texera/service/resource/WorkflowCompilationResourceSpec.scala	Updated CSV file path to reflect new directory structure
core/workflow-core/src/test/scala/org/apache/amber/storage/FileResolverSpec.scala	Updated CSV file path to include core/ prefix
core/dao/src/test/scala/org/apache/texera/dao/MockTexeraDB.scala	Updated DDL script path to include core/ prefix
core/dao/src/main/resources/jooq-conf.xml	Updated directory path for generated classes
core/amber/build.sbt	Changed project name from "texera" to "amber"
.github/workflows/github-action-build.yml	Removed cd core && from sbt commands
.github/labeler.yml	Added new service label configuration

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[aglinxinyuan]

I can’t build it on my machine; it might be just my local issue. @bobbai00, could you please test it on your machine? If it works for you, feel free to approve and merge the PR.

[bobbai00]

LGTM