Reduce closure size

[SuperSandro2000]

• use rollup to build yaml-language-server https://github.com/redhat-developer/yaml-language-server/blob/main/package.json#L77 @MarcelCoding yaml-language-server: drop dev dependencies to reduce closure size NixOS/nixpkgs#324160
• java-language-server java-language-server: use headless jdk to reduce dependencies NixOS/nixpkgs#323434 @SuperSandro2000
• typescript lsp nodePackages.typescript-language-server: remove no longer necessary t… NixOS/nixpkgs#324168

[SuperSandro2000]

We should check if any of the other language servers still contains their node_modules directory with dev dependencies as many of them are multiple 100 MBs in size.