Ocean: finishing get/list loan token api

[canonbrother]

Summary

• add active_price and fixed_interval_price_id on struct LoanToken
• sorted by creation_tx

Checked

list
    ✕ should listLoanTokens (10 ms) - undefined typing
    ✓ should listLoanTokens with pagination (4 ms)
    ✓ should listLoanTokens with an empty object if size 100 next 300 which is out of range (1 ms)
  get
    ✕ should get loan token by symbol (2 ms) - undefined typing
    ✕ should throw error while getting non-existent loan token id (10 ms) - errmsg