chore: Add local build scripts

[tleed5]

Adds powershell and bash scripts to automate building and installing local packages to Octopus Deploy and the Kubernetes Monitor

Example usage:

# bash 
./build-local.sh 
./build-local.sh --languages=go 

# Powershell 
./build-local.ps1
./build-local.ps1 --languages=go

Example output

./build-local.sh

=== Generating SDKs ===
Running buf generate...
✅ SDKs generated successfully

=== Processing Go SDK ===
🔄 Adding replace directive to Go module...
✅ Added Go module replace directive to ../lobster-watcher/go.mod

=== Processing C# SDK ===
📦 Packing C# SDK with version: 1.0.1-tl-add-local-build-script-20250528161221
  Determining projects to restore...
  Restored /Users/tleed/dev/kubernetes-monitor-contracts/csharp/Octopus/Octopus.Kubernetes.Monitor.MessageContracts/Octopus.Kubernetes.Monitor.MessageContracts.csproj (in 92 ms).
  Octopus.Kubernetes.Monitor.MessageContracts -> /Users/tleed/dev/kubernetes-monitor-contracts/csharp/Octopus/Octopus.Kubernetes.Monitor.MessageContracts/bin/Debug/net8.0/Octopus.Kubernetes.Monitor.MessageContracts.dll
  The package Octopus.Kubernetes.Monitor.MessageContracts.1.0.1-tl-add-local-build-script-20250528161221 is missing a readme. Go to https://aka.ms/nuget/authoring-best-practices/readme to learn why package readmes are important.
  Successfully created package '/Users/tleed/dev/LocalPackages/Octopus.Kubernetes.Monitor.MessageContracts.1.0.1-tl-add-local-build-script-20250528161221.nupkg'.
✅ C# SDK packaged to ../LocalPackages

🔍 Searching for projects referencing Octopus.Kubernetes.Monitor.MessageContracts...
📝 Updating ../OctopusDeploy/source/Octopus.Observability/Octopus.Observability.csproj to use version 1.0.1-tl-add-local-build-script-20250528161221
📝 Updating ../OctopusDeploy/source/Octopus.Observability.MessageContracts/Octopus.Observability.MessageContracts.csproj to use version 1.0.1-tl-add-local-build-script-20250528161221
📝 Updating ../OctopusDeploy/source/Octopus.Server/Octopus.Server.csproj to use version 1.0.1-tl-add-local-build-script-20250528161221
✅ Updated 3 project(s) to use version 1.0.1-tl-add-local-build-script-20250528161221

✨ Local development setup complete!

./build-local.ps1

=== Generating SDKs ===
Running buf generate...
✅ SDKs generated successfully

=== Processing Go SDK ===
🔄 Adding replace directive to Go module...
✅ Added Go module replace directive to ../lobster-watcher/go.mod

=== Processing C# SDK ===
📦 Packing C# SDK with version: 1.0.1-tl-add-local-build-script-20250528163217
  Determining projects to restore...
  Restored /Users/tleed/dev/kubernetes-monitor-contracts/csharp/Octopus/Octopus.Kubernetes.Monitor.MessageContracts/Octopus.Kubernetes.Monitor.MessageContracts.csproj (in 86 ms).
  Octopus.Kubernetes.Monitor.MessageContracts -> /Users/tleed/dev/kubernetes-monitor-contracts/csharp/Octopus/Octopus.Kubernetes.Monitor.MessageContracts/bin/Debug/net8.0/Octopus.Kubernetes.Monitor.MessageContracts.dll
  The package Octopus.Kubernetes.Monitor.MessageContracts.1.0.1-tl-add-local-build-script-20250528163217 is missing a readme. Go to https://aka.ms/nuget/authoring-best-practices/readme to learn why package readmes are important.
  Successfully created package '/Users/tleed/dev/LocalPackages/Octopus.Kubernetes.Monitor.MessageContracts.1.0.1-tl-add-local-build-script-20250528163217.nupkg'.
✅ C# SDK packaged to ../LocalPackages
🔍 Searching for projects referencing Octopus.Kubernetes.Monitor.MessageContracts...
📝 Updating /Users/tleed/dev/OctopusDeploy/source/Octopus.Observability/Octopus.Observability.csproj to use version 1.0.1-tl-add-local-build-script-20250528163217
📝 Updating /Users/tleed/dev/OctopusDeploy/source/Octopus.Observability.MessageContracts/Octopus.Observability.MessageContracts.csproj to use version 1.0.1-tl-add-local-build-script-20250528163217
📝 Updating /Users/tleed/dev/OctopusDeploy/source/Octopus.Server/Octopus.Server.csproj to use version 1.0.1-tl-add-local-build-script-20250528163217
✅ Updated 3 project(s) to use version 1.0.1-tl-add-local-build-script-20250528163217

✨ Local development setup complete!