Add S-CORE devcontainer

The devcontainer eases setup a lot and create a
reproducible environment. developers and CI should
see the same issues.

Author: lurtz

.devcontainer/alt_container_docker_on_windows/devcontainer.json

@@ -0,0 +1,5 @@
+{
+    "name": "eclipse-s-core-docker-on-windows",
+    "image": "ghcr.io/eclipse-score/devcontainer:latest",
+    "initializeCommand": "IF not exist ${localEnv:HOME}\\.cache\\bazel ( mkdir ${localEnv:HOME}\\.cache\\bazel )"
+}

.devcontainer/devcontainer.json

@@ -0,0 +1,5 @@
+{
+    "name": "eclipse-s-core",
+    "image": "ghcr.io/eclipse-score/devcontainer:latest",
+    "initializeCommand": "mkdir -p ${localEnv:HOME}/.cache/bazel"
+}