chore: clean up unused using directive in Cilium.cs and ensure consistent editorconfig settings

Signed-off-by: Nikolai Emil Damm <nikolaiemildamm@icloud.com>

Author: devantler

.editorconfig

@@ -11,6 +11,9 @@ insert_final_newline = true
 max_line_length = 120
 
 [*.cs]
+# Set default severity for all rules to warning
+dotnet_analyzer_diagnostic.severity = warning
+
 # Rule: Set personal preferences for analyzer diagnostics
 csharp_style_expression_bodied_accessors = when_on_single_line
 csharp_style_expression_bodied_constructors = when_on_single_line

src/Devantler.CiliumCLI/Cilium.cs

@@ -1,5 +1,4 @@
 using System.Runtime.InteropServices;
-using System.Text;
 using CliWrap;
 using CliWrap.Buffered;