adding example-usage/tool-vscodium-server/ --- Allow VSCodium as client <-> devcontainer running vscodium server

[craigphicks]

Changes to be committed: new file: example-usage/tool-vscodium-server/server/init-vscodium-server.sh new file: example-usage/tool-vscodium-server/start.sh new file: example-usage/tool-vscodium-server/tool-vscodium-server_README.md modified: example-usage/workspace/.devcontainer/devcontainer.json