feat: add Text Truncate tool

Implement Text Truncate tool with options for truncating text from the right, left, and line-by-line.
Allows setting custom truncation length and defining a truncation indicator.

src/pages/tools/string/index.ts

@@ -13,6 +13,7 @@ import { tool as stringSplit } from './split/meta';
 import { tool as stringJoin } from './join/meta';
 import { tool as stringReplace } from './text-replacer/meta';
 import { tool as stringRepeat } from './repeat/meta';
+import { tool as stringTruncate } from './truncate/meta';
 
 export const stringTools = [
   stringSplit,
@@ -20,7 +21,8 @@ export const stringTools = [
   stringRemoveDuplicateLines,
   stringToMorse,
   stringReplace,
-  stringRepeat
+  stringRepeat,
+  stringTruncate
   // stringReverse,
   // stringRandomizeCase,
   // stringUppercase,