Fix Deprecated FX Logger, Add Zap Logging

[renaz6]

fx.Logger(printer) has been deprecated and is causing unit tests to fail in Themis. We should refactor Themis to use Zap logging (https://pkg.go.dev/go.uber.org/zap) and the WithLogger(constructor) method (https://pkg.go.dev/go.uber.org/fx#WithLogger).

themis/xlog/printer.go

Lines 117 to 132 in 77da3c8

	func Logger() fx.Option {
	bp := new(BufferedPrinter)
	return fx.Options(
	fx.Logger(bp),
	fx.Provide(
	func(lc fx.Lifecycle) *BufferedPrinter {
	lc.Append(fx.Hook{
	OnStart: bp.OnStart,
	})
	return bp
	},
	),
	fx.ErrorHook(bp),
	)
	}

To Do:

• Refactor Themis to use Zap
• Update printer.go to use zap and WithLogger
• Add back the commented out unit test in printer_test.go and run
• Update and fix unit tests

Helpful Links:

• https://github.com/uber-go/fx/blob/4f51a19264fc8d0bf7b87ef7a8855feb96d264b7/fxevent/zap.go#L37-L58