Migrate all suites to `it`

[faustbrian]

Make use of it for all suites to ensure the it should convention for describing what a test tries to assert.

• [x] ada
• [x] ark
• [x] atom
• [x] avax
• [ ] btc
• [x] cryptography
• [x] dot
• [x] egld
• [x] eos
• [ ] eth
• [ ] helpers
• [ ] http-fetch
• [ ] intl
• [ ] lsk
• [ ] luna
• [x] markets
• [ ] nano
• [ ] neo
• [x] news
• [ ] profiles
• [ ] sdk
• [ ] sol
• [x] test
• [ ] trx
• [ ] xlm
• [ ] xrp
• [ ] zil

[faustbrian]

Making this part of https://github.com/PayvoHQ/sdk/issues/454