[eCash dev libraries] [p10 ecash-ops] Update package name and deps for pushdata-ecash 1.0.0

Summary:
T2847

Depends on D12865

Update pushdata-ecash so that package name is correct, unit tests work, peer dep is correct, and CHANGELOG.md is present + accurate

Test Plan:
Confirm no typos in README.md, CHANGELOG.md, and package.json renaming
npm test

Reviewers: #bitcoin_abc, emack

Reviewed By: #bitcoin_abc, emack

Differential Revision: https://reviews.bitcoinabc.org/D12867