Send logs to otel

[lf-]

Currently the log method is overridden to not send these to otel. This is unfortunate because we can send them and just don't for no reason.

nix-otel/plugin/plugin.cpp

Lines 125 to 127 in bbdadf0

	void log(Verbosity lvl, const FormatOrString &fs) override {
	upstream->log(lvl, fs);
	}