chore(release): electrum-client `0.25.0`

[oleonardolima]

A tracking issue for the issues and PRs that are candidates of being included in the upcoming 0.25.0 release of electrum-client.

I'm aiming it to be a MAJOR release, as it includes new API breaking changes. Let me know in the comments if there are any other issues and PRs that you'd like to be considered for it.

• Add support for Electrum protocol v1.6 #189
• Implement Electrum Protocol v1.6 #190
• feat: add dynamic authorization support via callback provider #194
• Include latest error in AllAttemptsErrored #188
• Client is only exported when proxy feature is enabled. #91
• Rename use-rustls and use-openssl features #42
• Simplify cargo features #182