Replace copier.Copy with optimized manual deep copy in URL.Clone (#2678)

[Nexusrex18]

Fixes by replacing copier.Copy with a manual deep copy in URL.Clone(), optimized with pre-allocated maps for params and attributes. This reduces memory and CPU overhead, especially for large data volumes.
Key changes:

• Replaced copier.Copy with manual implementation in URL.Clone().
• Removed github.com/jinzhu/copier import from url.go and dependency from go.mod via go mod tidy.
• Added TestSubURLCopy to verify deep-copy behavior.
• Updated BenchmarkClone to test the new implementation.

Benchmarks:

• 100 params/attributes:
  • Old (copier): 51 µs/op, 23.74 KB/op, 222 allocs/op
  • New (manual): 26 µs/op, 14.12 KB/op, 112 allocs/op
• 1,000 params/attributes:
  • Old (copier): 428 µs/op, 228 KB/op, 1,142 allocs/op
  • New (manual): 270 µs/op, 197 KB/op, 1,010 allocs/op

The new implementation is faster (~1.6x at 1,000 entries, ~2x at 100), uses less memory (~14% at 1,000, ~40% at 100), and reduces allocations (~12% at 1,000, ~50% at 100).

Note: Unrelated test failures in rpc_service_test.go (e.g., unexported testService) were observed but pre-exist this change and are outside this PR’s scope.

Fixes: #2678

Tested with:

• go test -v -run TestSubURLCopy: Passed
• go test -bench=BenchmarkClone -benchmem: Confirmed performance

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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