Add frontier url check to update check. Make update checks async. #124

	name: "Build XLCore"

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]
	workflow_dispatch:

	jobs:
	Build:
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./src/XIVLauncher.Core/
	concurrency:
	group: ${{ github.head_ref }}"
	cancel-in-progress: true
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	submodules: true
	fetch-depth: 0

	- name: Setup .NET
	uses: actions/setup-dotnet@v3
	with:
	dotnet-version: 6.0.x

	- name: Dotnet Restore
	run: dotnet restore

	- name: Dotnet Build (Default)
	run: dotnet publish -r linux-x64 --sc --configuration Release --no-restore -o ./dist/XIVLauncher.Core

	- name: Dotnet Build (Arch)
	run: dotnet publish -r linux-x64 --sc --configuration Release -p:DefineConstants=WINE_XIV_ARCH_LINUX --no-restore -o ./dist/XIVLauncher.Core-arch

	- name: Dotnet Build (Fedora)
	run: dotnet publish -r linux-x64 --sc --configuration Release -p:DefineConstants=WINE_XIV_FEDORA_LINUX --no-restore -o ./dist/XIVLauncher.Core-fedora

	- name: Dotnet Test
	run: dotnet test --no-build --verbosity normal

Provide feedback