feat: Create justfile for workflow automation

Signed-off-by: Oliver Kautz <oliver.kautz@gonicus.de>

Author: okautz

justfile

@@ -0,0 +1,57 @@
+# use with https://github.com/casey/just
+#
+# Cluster Stack Creation automation
+#
+
+set export
+set dotenv-filename := "just.env"
+set dotenv-load
+
+path := env_var('PATH') + ":" + justfile_directory() + "/bin"
+
+default:
+  @just --list --justfile {{justfile()}}
+
+# Check if csctl and clusterstack-provider-openstack are available and build them if neccessary
+[no-cd]
+ensure-dependencies:
+  #!/usr/bin/env bash
+  export PATH=${path}
+  if ! which csctl >/dev/null 2>&1;then
+    echo "csctl not found, building it from source."
+    mkdir -p bin
+    pushd bin
+    git clone https://github.com/SovereignCloudStack/csctl csctl-git
+    pushd csctl-git
+    make build
+    mv csctl ../csctl
+    popd
+    rm -rf csctl-git
+    popd
+  fi
+
+  if ! which csctl-openstack >/dev/null 2>&1; then
+    echo "csctl-plugin-openstack not found, building it from source."
+    mkdir -p bin
+    pushd bin
+    git clone https://github.com/SovereignCloudStack/csctl-plugin-openstack
+    pushd csctl-plugin-openstack
+    make build
+    mv csctl-openstack ../csctl-openstack
+    popd
+    rm -rf csctl-plugin-openstack
+    popd
+  fi
+
+  if [[ -d bin ]]; then
+    export PATH="${PATH}:$(pwd)/bin"
+  fi
+
+# Clean temporary files and binaries
+clean:
+  #!/usr/bin/env bash
+  rm -rf bin
+
+# Build Clusterstacks version
+build: ensure-dependencies
+  ./hack/generate_version.py --build