Add StripStart string extension method

StabilityMatrix.Core/Extensions/StringExtensions.cs

@@ -4,7 +4,8 @@ namespace StabilityMatrix.Core.Extensions;
 
 public static class StringExtensions
 {
-    private static string EncodeNonAsciiCharacters(string value) {
+    private static string EncodeNonAsciiCharacters(string value)
+    {
         var sb = new StringBuilder();
         foreach (var c in value)
         {
@@ -12,10 +13,11 @@ public static class StringExtensions
             if (c > 127 || c < 32)
             {
                 // This character is too big for ASCII
-                var encodedValue = "\\u" + ((int) c).ToString("x4");
+                var encodedValue = "\\u" + ((int)c).ToString("x4");
                 sb.Append(encodedValue);
             }
-            else {
+            else
+            {
                 sb.Append(c);
             }
         }
@@ -35,16 +37,18 @@ public static class StringExtensions
         writer.Write("'");
         foreach (var ch in str)
         {
-            writer.Write(ch switch
+            writer.Write(
+                ch switch
                 {
                     '\0' => "\\0",
                     '\n' => "\\n",
                     '\r' => "\\r",
                     '\t' => "\\t",
                     // Non ascii
-                _ when ch > 127 || ch < 32 => $"\\u{(int) ch:x4}",
+                    _ when ch > 127 || ch < 32 => $"\\u{(int)ch:x4}",
                     _ => ch.ToString()
-            });
+                }
+            );
         }
         writer.Write("'");
 
@@ -71,4 +75,13 @@ public static class StringExtensions
         }
         return count;
     }
+
+    /// <summary>
+    /// Strips the substring from the start of the string
+    /// </summary>
+    public static string StripStart(this string str, string subString)
+    {
+        var index = str.IndexOf(subString, StringComparison.Ordinal);
+        return index < 0 ? str : str.Remove(index, subString.Length);
+    }
 }