Refactor cwmp and configuration

[mptrk]

• Remove artifact automatic selection and parsing; user can either specify one explicitly or select if more than one found and none was explicitly specified.
• Rewrite CWMP SOAP message handling to use typed encoding/xml envelopes and RPC structs, including support for GetRPCMethods and async RPC flows.
• Replace the old dispatcher-driven flow with a generic device executor model and move CWMP/SSH implementations into protocol-specific packages.
• Rework sequence execution to be protocol-agnostic with per-step timeouts, retries, delays, ignore-failure behavior, and response capture.
• Add typed endpoint/auth configuration and update tests to cover the new message and device structure.
• Simplify publish sequences using the typed endpoint configurations.
• Cleanup

[mptrk]

There is a segfault when publishing with a predefined artifact, using --artifact option. See below:

$ corteca publish local --artifact ./dist/TestApp-0.0.1-aarch64-oci.tar
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x38 pc=0x9946b2]

goroutine 1 [running]:
github.com/nokia/corteca-cli/cmd.requireBuildArtifact()
	/home/pateraki/Projects/bbd/foss/corteca-cli/cmd/root.go:231 +0x1f2
github.com/nokia/corteca-cli/cmd.doPublishApp({0x7ffdada4500f, 0x5}, 0x1)
	/home/pateraki/Projects/bbd/foss/corteca-cli/cmd/publish.go:59 +0x36
github.com/nokia/corteca-cli/cmd.init.func6(0x9a5c775cf00?, {0x9a5c77b2240?, 0x4?, 0xb4f00e?})
	/home/pateraki/Projects/bbd/foss/corteca-cli/cmd/publish.go:39 +0x29
github.com/spf13/cobra.(*Command).execute(0x114f120, {0x9a5c77b21e0, 0x3, 0x3})
	/home/pateraki/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:944 +0x89b
github.com/spf13/cobra.(*Command).ExecuteC(0x114fca0)
	/home/pateraki/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:1068 +0x398
github.com/spf13/cobra.(*Command).Execute(...)
	/home/pateraki/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:992
github.com/nokia/corteca-cli/cmd.Execute(...)
	/home/pateraki/Projects/bbd/foss/corteca-cli/cmd/root.go:77
main.main()
	/home/pateraki/Projects/bbd/foss/corteca-cli/main.go:10 +0x1b