[Sync] Update project files from source repository (ead8752)

[mrz1836]

What Changed

• Updated MAGE_X_VERSION from v1.13.0 to v1.15.0
• Updated MAGE_X_GORELEASER_VERSION from v2.13.1 to v2.13.2
• Updated MAGE_X_YAMLFMT_VERSION from v0.20.0 to v0.21.0
• Added new MAGE_X_BENCHSTAT_VERSION configuration set to v0.0.0-20251208221838-04cf7a2dca90
• Modified Gitpod workspace configuration comments to be more generic (removed specific project references)
• Updated echo messages in .gitpod.yml to use generic "development environment" terminology
• Added new GitHub Actions for benchstat setup and statistics upload workflows
• Created new workflow fortress-completion-statistics.yml for benchmark statistics collection
• Updated documentation in mage-x.md and README.md for tech conventions
• Modified dependabot-auto-merge.yml, fortress-coverage.yml, and fortress-test-matrix.yml workflows

Why It Was Necessary

• Upgrading MAGE-X build tooling to the latest version ensures access to newer features, bug fixes, and improvements in the build automation system
• Adding benchstat support enables automated benchmark statistics collection and comparison for performance tracking
• Genericizing Gitpod configuration comments improves reusability and removes project-specific references from shared configuration

Testing Performed

• Verify that MAGE-X v1.15.0 installation succeeds and all magex commands function correctly
• Confirm goreleaser v2.13.2 and yamlfmt v0.21.0 execute without errors in CI pipelines
• Validate that new benchstat action integrates properly with existing GitHub Actions workflows
• Test Gitpod workspace initialization completes successfully with updated configuration

Impact / Risk

• Low risk - Version updates are incremental and within compatible ranges for build tooling dependencies
• No breaking changes - Configuration updates maintain backward compatibility with existing workflows
• Positive impact - New benchstat integration provides enhanced performance monitoring capabilities
• CI/CD impact - Updated tool versions may have slightly different behavior but are tested and stable releases

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mrz1836]

LGTM!