chore: Visual Studio Support

[ciband]

Added back missing JSON file that integrates cmake build system into the Visual Studio IDE.

Cleared warnings.

What kind of change does this PR introduce?

• Bugfix
• Feature
• Refactor
• Performance
• Tests
• Build
• Documentation
• Code style update
• Continuous Integration
• Other, please describe:

Does this PR introduce a breaking change?

• Yes
• No

Does this PR release a new version?

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• It's submitted to the develop branch, not the master branch
• All tests are passing
• New/updated tests are included

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

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[sleepdefic1t]

@ciband
Figured out macOS CI builds aren't triggered if you're tracking from your CircleCI account and do not have a macOS plan.
If you disable C++ Crypto from your CircleCI account,
subsequent PR's will default to the organization and trigger all PR checks 👍

[ciband]

@sleepdefic1t I've disabled my circleci for this repo. Are you able to re-trigger CI for this PR? I do not seem to have access.

[sleepdefic1t]

@ciband
Nope. It's still tied to your CircleCi account.
It would have to be closed and resubmitted in a new PR to get picked up by the Organization account...
That's doing too much. lol

Just from looking at it, that's totally legal in macOS and should have no issues.
std::vector<>::size just evaluates to an unsigned integer,
which was probably why Windows wanted you to be explicit with the initial value.

This looks good to go, @faustbrian 👍

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