Please consider exposing version string to user

[rymdbar]

Both today and yesterday I wished to know which version of perlnavigator was actually being run, but could not figure out how to make it tell me. I tried running perlnavigator --version, but that only throws a long error about the 'Connection input stream' something. The same is true for running perlnavigator with -V, --help or -h.

Does adding some or all of those options seem like a reasonable feature for perlnavigator to have? Unfortunately I'm lost with typescript, so I'm not attempting a patch.

When not being able to verify to be running the correct version using the command line, I looked at the LSP communication. The response perlnavigator is giving to an 'initialize' method call is:

{
    "jsonrpc": "2.0",
    "id": 2,
    "result": {
        "capabilities": {
            "textDocumentSync": 2,
            "completionProvider": {
                "resolveProvider": true,
                "triggerCharacters": [
                    "$",
                    "@",
                    "%",
                    "-",
                    ">",
                    ":"
                ]
            },
            "definitionProvider": true,
            "documentSymbolProvider": true,
            "workspaceSymbolProvider": true,
            "hoverProvider": true,
            "documentFormattingProvider": true,
            "documentRangeFormattingProvider": true,
            "signatureHelpProvider": {
                "triggerCharacters": [
                    "(",
                    ",",
                    ")"
                ]
            }
        }
    }
}

Other LSP:s tend to include a serverInfo block inside of result:

        "serverInfo": {
            "name": "pylsp",
            "version": "1.12.2"
        }
…
        "serverInfo": {
            "name": "rust-analyzer",
            "version": "2025.06.23"
        }
…
        "serverInfo": {
            "name": "Tombi LSP",
            "version": "0.5.3"
        }

Would it be desirable to have perlnavigator to also do that?