Add AppVeyor configuration for Windows release builds

release/windows/build-curl.ps1

@@ -0,0 +1,41 @@
+#!/usr/bin/env pwsh
+
+$global:CurlVersion = '7.70.0'
+
+$global:CurlDeps = @(
+    'OpenSsl'
+    'Zlib'
+)
+
+function global:Build-Curl([string] $PrefixDir, [string] $Arch, [string] $DepsPrefixDir) {
+    $Filename = "curl-${CurlVersion}.tar.gz"
+    $Url = "https://curl.haxx.se/download/${Filename}"
+
+    $SourceDir = Invoke-DownloadAndUnpack $Url $Filename
+    $BuildDir = Join-Path $SourceDir .build
+
+    $ConfigOptions = @(
+        '-DCMAKE_BUILD_TYPE=RelWithDebInfo'
+        "-DCMAKE_INSTALL_PREFIX=${PrefixDir}"
+        "-DCMAKE_PREFIX_PATH=${DepsPrefixDir}"
+        '-DCMAKE_USE_OPENSSL=ON'
+        '-DCURL_WINDOWS_SSPI=OFF'
+        '-DBUILD_CURL_EXE=OFF'
+        '-DBUILD_TESTING=OFF'
+        '-DCURL_DISABLE_DICT=ON'
+        '-DCURL_DISABLE_GOPHER=ON'
+        '-DCURL_DISABLE_IMAP=ON'
+        '-DCURL_DISABLE_SMTP=ON'
+        '-DCURL_DISABLE_POP3=ON'
+        '-DCURL_DISABLE_RTSP=ON'
+        '-DCURL_DISABLE_TFTP=ON'
+        '-DCURL_DISABLE_TELNET=ON'
+        '-DCURL_DISABLE_LDAP=ON'
+        '-DCURL_DISABLE_LDAPS=ON'
+        '-DENABLE_MANUAL=OFF'
+    )
+
+    Invoke-CMakeBuildAndInstall $SourceDir $BuildDir $ConfigOptions
+    Invoke-NativeCommand cmake -E remove_directory (Join-Path $PrefixDir lib cmake CURL) # until we support it
+    Copy-Item -Path (Join-Path $BuildDir lib libcurl.pdb) -Destination (Join-Path $PrefixDir bin)
+}