feat: add mvp language server (#8515)

Resolves #8400

1 files changed, 23 insertions, 0 deletions

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+# Deno Language Server
+
+The Deno Language Server provides a server implementation of the
+[Language Server Protocol](https://microsoft.github.io/language-server-protocol/)
+which is specifically tailored to provide a _Deno_ view of code. It is
+integrated into the command line and can be started via the `lsp` sub-command.
+
+> :warning: The Language Server is highly experimental and far from feature
+> complete.
+
+This document gives an overview of the structure of the language server.
+
+## Acknowledgement
+
+The structure of the language server was heavily influenced and adapted from
+[`rust-analyzer`](https://rust-analyzer.github.io/).
+
+## Structure
+
+When the language server is started, a `ServerState` instance is created which
+holds all the state of the language server, as well as provides the
+infrastructure for receiving and sending notifications and requests from a
+language server client.