Add go implementation

[brenbar]

No description provided.

[Copilot]

Pull Request Overview

This pull request adds Go language support to the Telepact ecosystem. The changes introduce a Go library implementation alongside existing Java, Python, and TypeScript libraries, including code generation capabilities, test infrastructure, and schema validation improvements.

Key Changes:

• Adds comprehensive Go library implementation with validation, type system, and code generation
• Integrates Go into the multi-language test harness for cross-language compatibility testing
• Updates CLI tooling to support Go code generation
• Improves schema validation error messages by introducing a new DuplicateField error type
• Updates release/deployment tooling to include Go library

Reviewed Changes

Copilot reviewed 178 out of 180 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tool/telepact_project_cli/telepact_project_cli/cli.py	Adds 'go' target to release targets and GitHub labels configuration
test/runner/schema/parse/schema.telepact.json	Adds new DuplicateField error type to validation schema
test/runner/parse_cases.py	Updates test cases to use new DuplicateField error instead of PathCollision
test/runner/Makefile	Adds Go test targets and build dependencies
test/lib/go/*	Complete Go test harness implementation including dispatcher and code generation handler
sdk/cli/tests/test_main.py	Adds test case for Go code generation
sdk/cli/tests/data/example1.telepact.json	Updates test schema field name
sdk/cli/telepact_cli/templates/go_all.j2	New Jinja2 template for Go code generation
sdk/cli/telepact_cli/cli.py	Adds Go language support to codegen command with type conversion and identifier sanitization
lib//ParseStructFields.	Updates duplicate field detection to report DuplicateField instead of PathCollision
lib/go/*	Complete Go library implementation with types, validation, schema parsing, and code generation

[Copilot]

The pytest -k filter expression [go is incomplete and syntactically invalid. It should be go or a complete filter pattern like test_client_server_case[go-.