[cmake] Update CPMUtil (#4123)

Notable changes

- Single cpmfile
- version/min_version/git_version have been fixed and replaced with
  version and min_version
- Docs rewrite
- Legacy options are gone
- Fixed update/version commands
- Added patch creation functionality

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4123
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

tools/cpm/package/util/url.sh

@@ -0,0 +1,27 @@
+#!/bin/sh -e
+
+# SPDX-FileCopyrightText: Copyright 2026 crueter
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+# Get the download URL for a package
+
+if [ "$URL" != "null" ]; then
+	DOWNLOAD="$URL"
+elif [ "$REPO" != "null" ]; then
+	GIT_URL="https://$GIT_HOST/$REPO"
+
+	if [ "$SHA" != "null" ]; then
+		DOWNLOAD="${GIT_URL}/archive/${SHA}.tar.gz"
+	elif [ "$TAG" != "null" ]; then
+		if [ "$ARTIFACT" != "null" ]; then
+			DOWNLOAD="${GIT_URL}/releases/download/${TAG}/${ARTIFACT}"
+		else
+			DOWNLOAD="${GIT_URL}/archive/refs/tags/${TAG}.tar.gz"
+		fi
+	fi
+else
+	echo "!! No repo or URL defined for $PACKAGE_NAME"
+	exit 1
+fi
+
+export DOWNLOAD