Merge pull request #134 from punker76/jk/CentralPackageManagement

github: add issue and pr templates

build: use Central Package Management and update packages

Merge pull request #133 from punker76/jk/targetframework-cake

chore: remove net452, net46, .NET Core 3.0, .NET Core 3.1 support

ci: update github actions

ci: update cake and cake script

Update README.md

Merge branch 'develop' into main

fix: #131 add dialog to panel even if IsOpen already set to true

fix: do not depend on JetBrains.Annotations

Merge branch 'develop' into main

ci: use azure-key-vault-tenant-id

build: prepare v2.2.0

Merge pull request #130 from Fruchtzwerg94/size_constraints_support