Instance Start/Stop crons + Fixes

[Cyberboss]

Fixes #1985
Closes #1969

🆑
Fixed version telemetry not being reported. This was due to a misconfiguration in the deployment process and isn't reflected in code.
Fixed GET /Administration returning bad data if a prior request to it was aborted.
Fixed downgrading to versions between <6.70 and >=6.6.0 migrating MySQL/MariaDB databases incorrectly.
UserId in OAuthConnections schema is now properly non-nullable.
(POTENTIAL INCOMPATIBILITY) Limited database cron string lengths to 1000 characters instead of 10000.
Fixed cases where very long timers could throw exceptions.
Added start/stop cron schedules for instance game servers.
/🆑

🆑 HTTP API
Added autoStartCron and autoStopCron to Instance model. Functions identically to autoUpdateCron but will instead launch and gracefully shutdown the server respectively. Added instance rights 2048 and 4096 to adjust these respectively.
/🆑

🆑 Nuget: API
Updated to API v10.12.0.
Added Limits.CronStringLength.
Adjusted StringLength attribute on Instance.AutoUpdateCron.
Added Instance.AutoStartCron and Instance.AutoStopCron.
Added InstanceManagerRights.SetAutoStart and InstanceManagerRights.SetAutoStop.
/🆑

🆑 Nuget: Client
Update API Library to v16.3.0
/:cl:

Merging with [RESTDeploy][NugetDeploy]

[codecov]

Codecov Report

Attention: Patch coverage is 98.06452% with 90 lines in your changes missing coverage. Please review.

Project coverage is 95.68%. Comparing base (bfd9d2e) to head (9f220cc).
Report is 8 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1998      +/-   ##
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+ Coverage   95.59%   95.68%   +0.09%     
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  Files         802      810       +8     
  Lines      170557   175103    +4546     
  Branches     3510     3526      +16     
==========================================
+ Hits       163045   167549    +4504     
- Misses       6961     7001      +40     
- Partials      551      553       +2