Fix client server number rounding

[kajoseph]

Description

CWC's toHex util provided inconsistent conversions for large Numbers.

Changelog

• Adds a special conversion for Numbers in CWC's toHex util function.
• Adds round-trip tests for TXPs in BWC.
• Adds typing to BWS's getSendMaxInfo() methods
• Adds numberFormat params to getTx and getSendMaxInfo methods in both BWC & BWS
• Fixes client-side verification method(s) when verifying string/hex numbers.
• Fixes some incidental issues:
  • Fixed bitcore-client's deleteWallet idempotence
  • Fixed ci.sh local test runner creating the build dirs as root

Testing Notes

Add any helpful notes for reviewers to test your code here.

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Checklist

• I have read CONTRIBUTING.md and verified that this PR follows the guidelines and requirements outlined in it.