Highlighted code blocks inside the app (#1153)

app/MindWork AI Studio/Tools/CodeHighlighting/Languages/ShellCodeRules.cs

@@ -0,0 +1,30 @@
+namespace AIStudio.Tools.CodeHighlighting.Languages;
+
+/// <summary>
+/// How a script of a Unix shell, such as Bash, looks to the tokenizer.
+/// </summary>
+/// <remarks>
+/// A # starts a comment only at the start of a word, so $# and ${#list[@]} stay variables. Strings may
+/// run over several lines, and the variables within double quotation marks stay a part of the string.
+/// </remarks>
+public static class ShellCodeRules
+{
+    public static readonly CodeLanguageRules RULES = new()
+    {
+        Keywords = CodeLanguageRules.Words(
+            "break", "case", "continue", "declare", "do", "done", "elif", "else", "esac", "exit", "export", "fi", "for",
+            "function", "if", "in", "local", "readonly", "return", "select", "source", "then", "time", "until", "unset",
+            "while"),
+
+        FunctionDeclarations = CodeLanguageRules.Words("function"),
+        LineComments = ["#"],
+        LineCommentsNeedSeparator = true,
+        Strings =
+        [
+            new("\"", "\"", IsMultiline: true),
+            new("'", "'", Escape: null, IsMultiline: true),
+        ],
+
+        VariablePrefix = '$',
+    };
+}