CLI: Implement Conduit Logger

[raulb]

Similarly to how we implemented it in meroxa's CLI: https://github.com/meroxa/cli/tree/4836e3d078f42ae19e48234d24300bac50e62734/log

This would let us provide a --json flag and automatically print out what we'd like (among other benefits):

Conduit Commands would need to implement:

_ ecdysis.CommandWithLogger  = (*MyCommand)(nil)

type MyCommand struct {
  logger log.Logger
}

func (c *MyCommand) Logger(logger log.Logger) {
	c.logger = logger
}

func (c *MyCommand) Execute(ctx context.Context) error {
       // var prettyJSON
	c.logger.JSON(ctx, prettyJSON.String())
	c.logger.Info(ctx, "hello world")
	return nil
}

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Part of #1911