Dev Container improvements

[abeltrano]

This pull request includes changes to improve the development environment for the netremote project. The most important changes include updating the volumes for the netremote-dev and netremote-dev-hostapd services, and updating the Dockerfile for the netremote-dev image to use a specific version of LLVM.

Development environment improvements:

• .devcontainer/compose-devcontainer.yaml: Changed volumes for netremote-dev and netremote-dev-hostapd services to mount ../.. directory to /workspaces and create a new volume called workspace mounted to /workspace.
• .devcontainer/devcontainer.json: Updated devcontainer.json to use a variable for the workspace folder and changed the directory path.

Dockerfile improvements:

• .docker/netremote-dev/Dockerfile: Updated the Dockerfile for the netremote-dev image to use a specific version of LLVM, remove the wget package, and add the lsb-release package. [1] [2] [3]

Docker Compose improvements:

• .docker/compose.yaml: Updated the netremote-dev-hostapd service to add security options and remove the context property.