AWS CLI v2のインストラーを追加

aws/tools/Makefile

+install:
+	make /usr/local/bin/aws
+	aws --version
+~/awscliv2.zip:
+	curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o ~/awscliv2.zip
+/usr/local/bin/aws: ~/awscliv2.zip
+	cd /tmp && unzip ~/awscliv2.zip && sudo ./aws/install -i /usr/local/aws-cli -b /usr/local/bin

aws/tools/README.md

+# AWS CLI v2 のインストール
+
+make install