feat(scripts): add installation script for systemd-timer binary

- Introduces a Bash script to install the systemd-timer binary
- Detects OS and architecture to download the appropriate binary
- Verifies the binary using SHA256 checksum for security
- Supports installation with or without sudo privileges

scripts/install.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# === Konfiguration ===
+REPO_URL="https://git.0xmax42.io/maxp/systemd-timer/releases/download/latest"
+BINARY_NAME="systemd-timer"
+INSTALL_PATH="/usr/local/bin"
+
+# === Systemarchitektur erkennen ===
+ARCH=$(uname -m)
+case "$ARCH" in
+  x86_64) ARCH="amd64" ;;
+  aarch64 | arm64) ARCH="arm64" ;;
+  *) echo "Unsupported architecture: $ARCH" >&2; exit 1 ;;
+esac
+
+OS=$(uname -s)
+case "$OS" in
+  Linux) OS="linux" ;;
+  *) echo "Unsupported OS: $OS" >&2; exit 1 ;;
+esac
+
+# === Download-URL zusammensetzen ===
+BINARY_FILE="${BINARY_NAME}-${OS}-${ARCH}"
+DOWNLOAD_URL="${REPO_URL}/${BINARY_FILE}"
+
+echo "📦 Installing ${BINARY_NAME} for ${OS}/${ARCH}..."
+echo "🌐 Downloading from: ${DOWNLOAD_URL}"
+
+# === Binary herunterladen ===
+TMP_FILE=$(mktemp)
+curl -fsSL "${DOWNLOAD_URL}" -o "${TMP_FILE}"
+chmod +x "${TMP_FILE}"
+
+# === Optional: SHA256-Check ===
+curl -fsSL "${DOWNLOAD_URL}.sha256" -o "${TMP_FILE}.sha256"
+echo "$(cat ${TMP_FILE}.sha256)  ${TMP_FILE}" | sha256sum -c -
+
+# === Installation ===
+echo "🚀 Installing to ${INSTALL_PATH}/${BINARY_NAME}"
+if [ -w "$INSTALL_PATH" ]; then
+  install -m 755 "${TMP_FILE}" "${INSTALL_PATH}/${BINARY_NAME}"
+else
+  sudo install -m 755 "${TMP_FILE}" "${INSTALL_PATH}/${BINARY_NAME}"
+fi
+
+echo "✅ Installation complete: $(command -v ${BINARY_NAME})"
+"${BINARY_NAME}" --version || true