Update to 0.12.0-dev.2811+3cafb9655, fix uri path parsing, refactor headers to future std.http.Header, add TLS support

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Not sure the status of this project, but I found it easier to hack at than the more mature https://github.com/karlseguin/websocket.zig . Here are various fixes I made to get it working for wss://socket.polygon.io/stocks

I also made unit tests run with zig build test and added build.zig.zon for package support.

Closes #1 .