Upgrade to .NET 5.x

Upgrade to .NET 5.x
Added multi-framework target support - .NET 5, .NET Core 3.1, .NET Standard 2.1 and .NET Standard 2.0
Update libraries and SDKs to the latest version.

Upgrade to .NET Core 3.x

Upgrade all LiteX HealthChecks packages to .NET Core 3.x
Upgrade all dependent Microsoft packages to .NET Core 3.x
Upgrade all dependent packages (SDKs) to the latest version

1.0.0

Azure ServiceBus
Azure Blob Storage
Azure Queue Storage
CosmosDB
MongoDB
MySql
MariaDB
PostgreSql
Redis
SqlServer