refactor: Switch from Packages API to Releases API for distribution

- Replace upload_to_packages scripts with create_release scripts
- Use Forgejo Releases API instead (standard for binaries)
- Windows: create_release.ps1 creates release and uploads exe + checksum
- macOS: create_release.sh creates release and uploads dmg + checksum
- Interactive credential prompts on first run
- UpdateManager queries releases/latest for updates
- Much simpler and matches standard open-source distribution
- Rename FORGEJO_PACKAGES_SETUP.md to reflect Releases approach
- Update documentation with Releases API examples

build/scripts/upload_to_packages.ps1

@@ -1,136 +0,0 @@
-# Upload Windows Build to Forgejo Packages
-# Usage: .\upload_to_packages.ps1 -Version 1.0.0
-# Uses your Forgejo credentials (same as git)
-# First run will prompt for credentials and save them to this session
-
-param(
-    [Parameter(Mandatory=$false)]
-    [string]$Version,
-    
-    [Parameter(Mandatory=$false)]
-    [string]$ForgejoUser,
-    
-    [Parameter(Mandatory=$false)]
-    [string]$ForgejoPW,
-    
-    [switch]$ClearCredentials,
-    
-    [string]$ForgejoUrl = "https://git.him-tools.de",
-    [string]$Repo = "HIM-public/webdrop-bridge",
-    [string]$ExePath = "build\dist\windows\WebDropBridge.exe",
-    [string]$ChecksumPath = "build\dist\windows\WebDropBridge.exe.sha256"
-)
-
-$ErrorActionPreference = "Stop"
-
-# Handle --ClearCredentials flag
-if ($ClearCredentials) {
-    Remove-Item env:FORGEJO_USER -ErrorAction SilentlyContinue
-    Remove-Item env:FORGEJO_PASS -ErrorAction SilentlyContinue
-    Write-Host "[OK] Credentials cleared from this session" -ForegroundColor Green
-    exit 0
-}
-
-# Get credentials from sources (in order of priority)
-if (-not $ForgejoUser) {
-    $ForgejoUser = $env:FORGEJO_USER
-}
-
-if (-not $ForgejoPW) {
-    $ForgejoPW = $env:FORGEJO_PASS
-}
-
-# If still no credentials, prompt user interactively
-if (-not $ForgejoUser -or -not $ForgejoPW) {
-    Write-Host "Forgejo credentials not found. Enter your credentials:" -ForegroundColor Yellow
-    
-    if (-not $ForgejoUser) {
-        $ForgejoUser = Read-Host "Username"
-    }
-    
-    if (-not $ForgejoPW) {
-        $securePass = Read-Host "Password" -AsSecureString
-        $ForgejoPW = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToCoTaskMemUnicode($securePass))
-    }
-    
-    # Save credentials to environment for this session
-    $env:FORGEJO_USER = $ForgejoUser
-    $env:FORGEJO_PASS = $ForgejoPW
-    Write-Host "[OK] Credentials saved to this PowerShell session" -ForegroundColor Green
-    Write-Host "Tip: Credentials will persist until you close PowerShell or run: .\upload_to_packages.ps1 -ClearCredentials" -ForegroundColor Gray
-}
-
-# Verify Version parameter
-if (-not $Version) {
-    Write-Host "ERROR: Version parameter required" -ForegroundColor Red
-    Write-Host "Usage: .\upload_to_packages.ps1 -Version 1.0.0" -ForegroundColor Yellow
-    exit 1
-}
-
-# Verify files exist
-if (-not (Test-Path $ExePath)) {
-    Write-Host "ERROR: Executable not found at $ExePath" -ForegroundColor Red
-    exit 1
-}
-
-if (-not (Test-Path $ChecksumPath)) {
-    Write-Host "ERROR: Checksum file not found at $ChecksumPath" -ForegroundColor Red
-    exit 1
-}
-
-Write-Host "Uploading WebDropBridge $Version to Forgejo Packages..." -ForegroundColor Cyan
-
-# Get file info
-$exeSize = (Get-Item $ExePath).Length / 1MB
-$checksum = Get-Content $ChecksumPath -Raw
-
-Write-Host "File: WebDropBridge.exe ($([math]::Round($exeSize, 2)) MB)"
-Write-Host "Checksum: $($checksum.Substring(0, 16))..."
-
-# Create basic auth header
-$auth = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes("${ForgejoUser}:${ForgejoPW}"))
-
-# Upload executable
-Write-Host "`nUploading executable..." -ForegroundColor Yellow
-$exeUrl = "$ForgejoUrl/api/v1/repos/$Repo/packages/generic/webdrop-bridge/$Version/WebDropBridge.exe"
-
-$headers = @{
-    "Authorization" = "Basic $auth"
-}
-
-try {
-    $response = Invoke-WebRequest -Uri $exeUrl `
-        -Method PUT `
-        -Headers $headers `
-        -InFile $ExePath `
-        -ContentType "application/octet-stream" `
-        -TimeoutSec 600 `
-        -ErrorAction Stop
-    
-    Write-Host "[OK] Executable uploaded successfully" -ForegroundColor Green
-}
-catch {
-    Write-Host "ERROR uploading executable: $_" -ForegroundColor Red
-    exit 1
-}
-
-# Upload checksum
-Write-Host "Uploading checksum..." -ForegroundColor Yellow
-$checksumUrl = "$ForgejoUrl/api/v1/repos/$Repo/packages/generic/webdrop-bridge/$Version/WebDropBridge.exe.sha256"
-
-try {
-    $response = Invoke-WebRequest -Uri $checksumUrl `
-        -Method PUT `
-        -Headers $headers `
-        -Body $checksum `
-        -ContentType "text/plain"
-    
-    Write-Host "[OK] Checksum uploaded successfully" -ForegroundColor Green
-}
-catch {
-    Write-Host "ERROR uploading checksum: $_" -ForegroundColor Red
-    exit 1
-}
-
-Write-Host "`n[OK] Upload complete!" -ForegroundColor Green
-Write-Host "View at: $ForgejoUrl/$Repo/packages" -ForegroundColor Cyan