Middleware: switch to v3, accurate coin amounts, fix word casing

[davidyuk]

found issues https://github.com/aeternity/ae_mdw/pull/1849 https://github.com/aeternity/ae_mdw/issues/1850 https://github.com/aeternity/ae_mdw/issues/1852 https://github.com/aeternity/ae_mdw/issues/1853 https://github.com/aeternity/ae_mdw/issues/1854 https://github.com/aeternity/ae_mdw/issues/1855 https://github.com/aeternity/ae_mdw/issues/1856 https://github.com/aeternity/ae_mdw/issues/1857 https://github.com/aeternity/ae_mdw/issues/1858 https://github.com/aeternity/ae_mdw/pull/1859 https://github.com/aeternity/ae_mdw/issues/1860 https://github.com/aeternity/ae_mdw/pull/1868 https://github.com/aeternity/ae_mdw/issues/1872 https://github.com/aeternity/ae_mdw/pull/1873

This PR is supported by the Æternity Foundation

https://github.com/Azure/azure-sdk-for-js/blob/ea3c2f414b485881b6d54b6e85118aaf7ed175a9/sdk/core/core-client/src/serializer.ts#L275 https://github.com/Azure/azure-sdk-for-js/blob/ea3c2f414b485881b6d54b6e85118aaf7ed175a9/sdk/core/core-client/src/deserializationPolicy.ts#L332

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.29%. Comparing base (4f531b1) to head (00a4f3e). Report is 1 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #2007 +/- ## =========================================== + Coverage 84.19% 84.29% +0.10% =========================================== Files 105 105 Lines 3473 3452 -21 Branches 720 717 -3 =========================================== - Hits 2924 2910 -14 + Misses 455 449 -6 + Partials 94 93 -1 ```

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