Fix for a Url to String conversion in info command

[smiasojed]

Summary

Closes none

• [n] y/n | Does it introduce breaking changes?
• [n] y/n | Is it dependent on the specific version of ink or pallet-contracts?

Fix for Url to String conversion

Description

According to url crate specification: "default port numbers are never reflected by the serialization"
Implemented function converts a Url into a string representation without excluding the default port.

For now the change is only for info command, but as follow up task is required a change in contract-extrinsics.
Conversion used there does not support correctly urls like: wss://shiden.api.onfinality.io:443/public-ws
The best option would be to have one common public function

Checklist before requesting a review

• My code follows the style guidelines of this project
• I have added an entry to CHANGELOG.md
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules