Some cleanup & code arrange

[StringExtensions] Add ReplaceEndings (#379)

Fix #369 (#370)

Improvements (#368)

* [csproj] Add net9.0 to TargetFrameworks

* [csproj] Add Tuple package for .NET 4.0

* [New] ArgumentNullThrowHelper

* [RedmineManagerOptionsBuilder] Rewrite build method

* [Obsolete] Adjustments

* [RedmineManager] Replace GetxxxObjects calls with GetxxxInternal

* [RedmineManagerAsync] Remove GeneratedRegex

* [RedmineManager] Ctor improvements

* [WebClient] RedmineWebClientOptions

* [Upload] Add fileName

* [global.json] Set Sdk version to 9.0.101

[Fix] Upload file for attachment (#356)

Merge pull request #353 from zapadi/dev/rework-foundation

[GitActions] Add missing job (before)

[New][RedmineManagerExtension] Add GetProjectFiles (#336)

[Journal] Add support for notes update (#335)

[Journal] Add support for notes update