feat: add 'scripts/install.sh' to make the installation more easy (#443)

scripts/install.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+set -ue
+
+OS_TYPE=
+ARCH_TYPE=
+VERSION=${1:-latest}
+GITHUB_ORG=GreptimeTeam
+GITHUB_REPO=greptimedb
+BIN=greptimedb
+
+get_os_type() {
+    os_type="$(uname -s)"
+
+    case "$os_type" in
+    Darwin)
+        OS_TYPE=darwin
+        ;;
+    Linux)
+        OS_TYPE=linux
+        ;;
+    *)
+        echo "Error: Unknown OS type: $os_type"
+        exit 1
+    esac
+}
+
+get_arch_type() {
+    arch_type="$(uname -m)"
+
+    case "$arch_type" in
+    arm64)
+        ARCH_TYPE=arm64
+        ;;
+    aarch64)
+        ARCH_TYPE=arm64
+        ;;
+    x86_64)
+        ARCH_TYPE=amd64
+        ;;
+    amd64)
+        ARCH_TYPE=amd64
+        ;;
+    *)
+        echo "Error: Unknown CPU type: $arch_type"
+        exit 1
+    esac
+}
+
+get_os_type
+get_arch_type
+
+if [ -n "${OS_TYPE}" ] && [ -n "${ARCH_TYPE}" ]; then
+    echo "Downloading ${BIN}, OS: ${OS_TYPE}, Arch: ${ARCH_TYPE}, Version: ${VERSION}"
+
+    if [ "${VERSION}" = "latest" ]; then
+        wget "https://github.com/${GITHUB_ORG}/${GITHUB_REPO}/releases/latest/download/${BIN}-${OS_TYPE}-${ARCH_TYPE}.tgz"
+    else
+        wget "https://github.com/${GITHUB_ORG}/${GITHUB_REPO}/releases/download/${VERSION}/${BIN}-${OS_TYPE}-${ARCH_TYPE}.tgz"
+    fi
+
+    tar xvf ${BIN}-${OS_TYPE}-${ARCH_TYPE}.tgz && rm ${BIN}-${OS_TYPE}-${ARCH_TYPE}.tgz && echo "Run '${BIN} --help' to get started"
+fi