chore: remove core/log

[Yicong-Huang]

This folder is no longer needed.

resolves #3879

[Copilot]

Pull Request Overview

This PR removes the core/log folder and updates all references to reflect changes in the project structure. The changes involve removing the core directory prefix from paths and updating build scripts, documentation, and CI configuration to align with the new structure.

• Removed core directory references from file paths throughout the codebase
• Updated build and deployment script paths in Docker configuration
• Modified CI workflows to use new directory structure

Reviewed Changes

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
amber/src/main/python/core/storage/iceberg/test_iceberg_document.py	Updated directory path to remove core/ prefix
access-control-service/src/main/scala/org/apache/texera/service/AccessControlService.scala	Replaced utility import with inline path construction
Dockerfile	Updated script paths to use bin/ directory
CONTRIBUTING.md	Updated documentation paths to reflect new structure
.github/workflows/github-action-build.yml	Updated CI script and directory paths
.github/labeler.yml	Updated labeling configuration paths

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