add workflows #7

	name: Nuget push Lagrange.Core

	on:
	push:
	branches:
	- main
	paths:
	- "Lagrange.Core/Lagrange.Core.csproj"
	workflow_dispatch:

	jobs:
	nuget-push:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/setup-dotnet@v4
	with:
	dotnet-version: '9'

	- uses: actions/checkout@v4

	# Check Version
	- shell: pwsh
	run: \|
	$lversion = ([xml](Get-Content .\Lagrange.Core\Lagrange.Core.csproj)).Project.PropertyGroup.Version
	echo "Local version: $lversion"

	$response = Invoke-WebRequest -Uri "https://api.nuget.org/v3-flatcontainer/lagrange.core/index.json"
	if ($response.StatusCode -eq 404) {
	echo "No remote version"
	echo "continued=true" >> $env:GITHUB_ENV
	exit 0
	}

	$rversions = ($response.Content \| ConvertFrom-Json).versions
	echo "Remote version: $rversions"
	if ($lversion -in $rversions) {
	echo "Version($lversion) already exists"
	echo "continued=false" >> $env:GITHUB_ENV
	exit 0
	}

	echo "Version($lversion) does not exist"
	echo "continued=true" >> $env:GITHUB_ENV
	exit 0

	- if: env.continued == 'true'
	run: dotnet pack -c Release -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg Lagrange.Core

	- if: env.continued == 'true'
	run: dotnet nuget push ./Lagrange.Core/bin/Release/*.nupkg --source https://api.nuget.org/v3/index.json --api-key ${{ secrets.NUGET_TOKEN }}

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