Add Github actions to verify PRs

[dmcgowan]

Add initial GHA

[Copilot]

Pull Request Overview

This PR adds CI/CD infrastructure for the nerdbox project, including protobuf tooling installation scripts, linting workflows, and dependency management. The changes establish automated validation for code quality, go modules, and protobuf definitions.

• Adds installation scripts for protobuf compiler and related Go tools
• Implements GitHub Actions workflows for linting, project checks, and protobuf validation
• Updates Makefile with vendor verification target and improved path handling
• Promotes github.com/vishvananda/netns from indirect to direct dependency

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
script/install-protobuf	Adds script to download/install protobuf compiler and status.proto file
script/install-proto-tools	Adds script to install Go-based protobuf tooling via go install
.github/workflows/ci.yml	Creates CI workflow with linters, project checks, and protobuf validation jobs
.github/actions/install-go/action.yml	Defines reusable GitHub Action for Go installation
Makefile	Adds verify-vendor target and updates ROOTDIR and proto-fmt paths
go.mod	Moves vishvananda/netns from indirect to direct dependency

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Pull Request Overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated no new comments.

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Pull Request Overview

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Pull Request Overview

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Pull Request Overview

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Pull Request Overview

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Pull Request Overview

Copilot reviewed 22 out of 32 changed files in this pull request and generated 2 comments.

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[Copilot]

[nitpick] Redundant capacity specification in make. The capacity parameter len(a)+1 is the same as the length, so it can be omitted: make([]unsafe.Pointer, len(a)+1).

[dmcgowan]

No more trailing whitespace