[LSP] Support configuring http server to access from remote development environments

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Proposal

Support configuring the GitLab Language Server HTTP server to be accessible in remote development environments. This enhancement is part of the broader effort to formally support various remote development environments for our Agentic IDE capabilities.

Currently, the Language Server may face connectivity issues in remote development environments due to network abstraction layers that hide connectivity details from users. Network administrators need to establish appropriate DNS filtering, firewall rules, and proxy configuration for both desktop and remote development environments to interact with GitLab instances and GitLab-hosted cloud services.

This feature will enable proper configuration of the Language Server's HTTP server to work seamlessly across:

Related Epic: &18915 - [Agentic IDE] Support remote development environments

Edited by 🤖 GitLab Bot 🤖