fix: use .exe extension for Windows platform

[jackTabsCode]

Closes #48
Not tested because I can't seem to get installing dev extensions to work on Windows.

[ramipellumbi]

Biome fails to start on windows and this would be a huge addition. To get it to work on windows you need to install cmake (recent change to building) and have it in path. See: https://zed.dev/docs/development/windows

An issue on windows now is (with config path set manually to be correct)

Language server error: biome

failed to spawn command. path: "C:Users\\RamiPellumbi\\Documents\\code\\project\\node_modules\\@biomejs\\biome\\bin\\biome", working directory: "C:\\Users\\RamiPellumbi\\Documents\\code\\project", args: ["lsp-proxy"]
-- stderr--

Note the missing \\ after C:. I think this would be an awesome fix