set autocrlf to false in containers (#232)

`core.autocrlf = true` is a common pitfall when edk2 developers create a
new file. It is always suggested to have this git config value turned
off when developing EDKII UEFI firmware. Updates the container to have
this git config set as expected.

Author: Javagedes

.sync/devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
   "image": "ghcr.io/microsoft/mu_devops/ubuntu-22-dev:latest",
-  "postCreateCommand": "git config --global --add safe.directory '*' && pip install --upgrade -r pip-requirements.txt",
+  "postCreateCommand": "git config --global --add safe.directory '*' && git config --global --add core.autocrlf false && pip install --upgrade -r pip-requirements.txt",
   "customizations": {
     "vscode": {
       "extensions": [