feat: validator registration timelock

[Cifko]

Description

Add VN registration timelock. It has to be set to at least for the validity period (base on current consensus). Fix the money lock value, add a test value of 1T to it.

Motivation and Context

Fixes https://github.com/tari-project/tari-dan/issues/831

How Has This Been Tested?

I did register a VN, and the I checked if it's timelocked in the wallet.

What process can a PR reviewer use to test or verify this change?

Register VN and see the timelock in the wallet.

Breaking Changes

• [x] None
• [ ] Requires data directory on base node to be deleted
• [ ] Requires hard fork
• [ ] Other - Please specify