Postgres Language Server: Initial Release

The Postgres Language Server is a Language Server Protocol (LSP) implementation for Postgres, aiming to provide reliable SQL tooling and developer experience. The initial release supports autocompletion, syntax error highlighting, type-checking, linter, and provides diagnostics. It's available via VSCode Extension, Neovim, GitHub Releases, and npm. The server architecture is designed around the assumption that the smallest unit of compilation is a single statement, with the database schema being the single source of truth for any type information. The parser uses `libpg_query` to parse SQL code reliably, while `tree-sitter` provides parsing for incomplete or malformed input. The server can process changes to the document efficiently by invalidating only affected statements and updating their ranges. Autocompletion is provided using a scoring algorithm that takes into account the changed node and CST. The Language Server is just one entry point in the project's vision, which aims to create a home for Postgres tooling and make everything accessible. Improvements to reliability will be focused on next, followed by installation guides, publishing extensions, and writing documentation to enable future contributors.

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