make example seed names more human friendly, and change imports

[zancas]

No description provided.

[fluidvanadium]

zingolib/src/wallet/disk/testing/tests:

use crate::lightclient::LightClient;
use crate::wallet::disk::testing::examples::{MobileShuffleVersion, VillageTargetVersion};
use crate::wallet::keys::unified::UnifiedKeyStore;

use super::super::LightWallet;
use super::assert_wallet_capability_matches_seed;

use super::examples::NetworkSeedVersion;

use super::examples::{MainnetSeedVersion, RegtestSeedVersion, TestnetSeedVersion};

use super::examples::{
    AbandonAbandonVersion, AbsurdAmountVersion, ChimneyBetterVersion, HospitalMuseumVersion,
    HotelHumorVersion,
};

this is all over the place. while either paradigm is acceptable to me, it is essential that related items are grouped

[fluidvanadium]

okay, if we are going to require that style, can we do it all the way instead of leaving it halfway?

im gonna do it now

[fluidvanadium]

merged conflict in #1486

fixed use statements to consistently follow preferred style

[zancas]

Oh.. sorry, I kicked off a sanity test and forgot to check it pre-push.. then noticed it was done and pushed. How's the current state?

Update pushed.

[fluidvanadium]

if a file has import grouping, all imports should be grouped

[fluidvanadium]

okay