NET-3860 - [Supportability] consul troubleshoot CLI for verifying ports (#18329)

* init

* udp

* added support for custom port

* removed grpc

* rename constants

* removed udp

* added change log

* fix synopsis

* pr comment chagnes

* make private

* added tests

* added one more test case

* defer close results channel

* removed unwanted comment

* licence update

* updated docs

* fix indent

* fix path

* example update

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update command/troubleshoot/ports/troubleshoot_ports.go

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/index.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update command/troubleshoot/ports/troubleshoot_ports.go

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update command/troubleshoot/ports/troubleshoot_ports.go

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* Update website/content/commands/troubleshoot/ports.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

* pr comment resolved

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Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>