refactor: migrate from zerolog to zap logging library

Replace github.com/rs/zerolog with go.uber.org/zap throughout the codebase
to improve performance and provide better structured logging capabilities.

Key changes:
- Replace zerolog imports with zap and zapcore
- Implement custom Logger wrapper in log.go to maintain zerolog-like API
- Add LogEvent struct with chained methods (Str, Int, Err, Bool, etc.)
- Update all logging calls to use the new zap-based wrapper
- Replace JSON encoders with Console encoders for better readability

Benefits:
- Better performance with zap's optimized logging
- Consistent structured logging across all components
- Maintained zerolog-like API for easy migration
- Proper field context preservation for debugging
- Multi-core logging architecture for better output control

All tests pass and build succeeds.

cmd/cli/self_kill_others.go

@@ -5,10 +5,10 @@ package cli
 import (
 	"os"
 
-	"github.com/rs/zerolog"
+	"github.com/Control-D-Inc/ctrld"
 )
 
-func selfUninstall(p *prog, logger zerolog.Logger) {
+func selfUninstall(p *prog, logger *ctrld.Logger) {
 	if uninstallInvalidCdUID(p, logger, false) {
 		logger.Warn().Msgf("service was uninstalled because device %q does not exist", cdUID)
 		os.Exit(0)