feat: provide metadata for documents, identities and data contracts

[shuplenkov]

Issue being fixed or feature implemented

To provide additional information with responses a special metadata field was added

What was done?

Updated wallet-lib and dapi-client. Change code to work with new dapi-client platform response formats.

How Has This Been Tested?

Unit tests.

Breaking Changes

None

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have added or updated relevant unit/integration/functional/e2e tests
• [x] I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• [x] I have assigned this pull request to a milestone

[lgtm-com[bot]]

This pull request introduces 2 alerts when merging f98d606fc1d6460b40eaea18405ad20c79ea25b7 into a178f3bbcb1fe6307c409b356d4e1d3d44e4b0bf - view on LGTM.com

new alerts:

• 2 for Unused variable, import, function or class

[lgtm-com[bot]]

This pull request introduces 2 alerts when merging e3b601740b48d259857ec8786564e2ae14f9d55a into a178f3bbcb1fe6307c409b356d4e1d3d44e4b0bf - view on LGTM.com

new alerts:

• 2 for Unused variable, import, function or class

[lgtm-com[bot]]

This pull request introduces 1 alert when merging 21e77686c140a7fbbf13d04a3ba42ba96941d10b into a178f3bbcb1fe6307c409b356d4e1d3d44e4b0bf - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class

[lgtm-com[bot]]

This pull request introduces 1 alert when merging 900cfeb2092dc467b1e49fb2883b6fd6c449796d into ed9c5b60b3db868bee45dd799e233d8b49e26021 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class