Using GoReleaser to build and release osctrl

[javuto]

Using GoReleaser to build and release, see documentation at https://goreleaser.com/

[Copilot]

Pull Request Overview

This PR introduces GoReleaser for automated building and releasing of osctrl components. GoReleaser is a powerful tool that simplifies the process of building Go applications for multiple platforms and creating releases.

• Adds comprehensive GoReleaser configuration supporting multiple binaries (tls, admin, api, cli)
• Introduces helper script for local GoReleaser operations
• Updates build system with new Makefile targets for release management

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools/gorelease.sh	Helper script providing convenient commands for GoReleaser operations
go.mod	Removes unused dependencies to clean up the module
Makefile	Adds new release-related targets and integrates with GoReleaser workflow
.goreleaser.yml	Main GoReleaser configuration defining builds, archives, Docker images, and packages
.github/workflows/test-release.yml	CI workflow for testing release builds on pull requests
.github/workflows/release.yml	CI workflow for creating releases when tags are pushed
.github/actions/tagged_release/docker/codesign/action.yml	Minor naming correction for consistency

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