chore: retire the standalone lsp and multiplayer images from examples, drop lsp/Dockerfile (#11341)

* chore: retire the standalone lsp and multiplayer images from examples, drop lsp/Dockerfile

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* chore: drop the unbuilt DockerfileMultiplayer, document running the LSP from windmill-extra

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* fix(examples): ecs terraform destroys cleanly and gives private instances no public ip

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* fix(examples): give windmill-extra on ecs a WINDMILL_BASE_URL for multiplayer auth, address review

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* fix(examples): make the ecs example upgrade cleanly from the standalone lsp/multiplayer stack

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* fix(examples): name the extra target group by prefix so create_before_destroy can replace it

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* docs(examples): note the brief editor-socket gap when upgrading the ecs example

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* docs(examples): the debugger stays off after the ecs upgrade unless enabled

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docker/DockerfileMultiplayer

@@ -1,9 +0,0 @@
-FROM node:slim
-
-EXPOSE 3002
-ENV PORT 3002 
-ENV HOST 0.0.0.0
-
-RUN npm install -g y-websocket
-
-CMD ["npx", "y-websocket"]