feat: account create transaction support private key

[AntonioCeppellini]

Description:
This PR allows AccountCreateTransaction to accept both PrivateKey and PublicKey like the other SDKs.

• Add support for using PrivateKey as key in AccountCreateTransaction
• Now key setters accept Key = Union[PrivateKey, PublicKey]
• Add _to_proto_key helper to correctly serialize PrivateKey as its corresponding PublicKey
• Add _derive_evm_address helper to derive EVM aliases from PrivateKey and PublicKey
• Add unit and integration tests

Related issue(s):

Fixes #939

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

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[exploreriii]

@tech0priyanshu request review if available

[tech0priyanshu]

@AntonioCeppellini @exploreriii Everything else looks good to me

[tech0priyanshu]

@AntonioCeppellini please resolve your merge conflict . For additional help read merge conflict guide .

[AntonioCeppellini]

@AntonioCeppellini please resolve your merge conflict . For additional help read merge conflict guide .

@tech0priyanshu resolved, thank you! :D

[exploreriii]

Request review @manishdait if available please

[manishdait]

Hi @AntonioCeppellini, Just a small change, Rest looks good to me.

[nadineloepfe]

@AntonioCeppellini: quick rebase pls and then that's ready to go! Thank you for your contribution

[exploreriii]

Hi @AntonioCeppellini
#946
we just merged, therefore, please refactor to use the utils 👍

[AntonioCeppellini]

@exploreriii i have removed the method to get the evm adress that i wrote because i saw that was already implemented in the class PublicKey .

[exploreriii]

Hi @AntonioCeppellini I think this is looking great, it may already be enough but it could be worth either in this or a separte issue expanding the test coverage and also adding examples

[exploreriii]

Hi @AntonioCeppellini nice work! Merged!

I noticed your examples follow a similar style to the other account create alias

We should update these examples to be more modular, in my opinion

for example, you generally just have a set up client and then one final functionat the end - but that can have lots of different functionality, making it very difficult for a user - wanting examples - to understand how to do each part

if you agree, would you be able to help me create a couple of these good first issues (keep to one example per good first issue) to refactor these monolithic examples into more modular functions? for example, pulling out the account info query into its own function <-- also idea for @tech0priyanshu @MonaaEid @Akshat1931
Thank you

[AntonioCeppellini]

Hi @AntonioCeppellini nice work! Merged!

I noticed your examples follow a similar style to the other account create alias

We should update these examples to be more modular, in my opinion

for example, you generally just have a set up client and then one final functionat the end - but that can have lots of different functionality, making it very difficult for a user - wanting examples - to understand how to do each part

if you agree, would you be able to help me create a couple of these good first issues (keep to one example per good first issue) to refactor these monolithic examples into more modular functions? for example, pulling out the account info query into its own function <-- also idea for @tech0priyanshu @MonaaEid @Akshat1931

Thank you

Yes, I agree with you, I will help you crate some good first issues :D @exploreriii