chore(*): organise rules into folders by type

src/rules/line/noTrailingSpaces.spec.ts

@@ -0,0 +1,22 @@
+import { Severity } from '../../types/Severity'
+import { noTrailingSpaces } from './noTrailingSpaces'
+
+describe('noTrailingSpaces', () => {
+  it('should return an empty array when the line has no trailing spaces', () => {
+    const line = "%put 'hello';"
+    expect(noTrailingSpaces.test(line, 1)).toEqual([])
+  })
+
+  it('should return an array with a single diagnostic when the line has trailing spaces', () => {
+    const line = "%put 'hello';  "
+    expect(noTrailingSpaces.test(line, 1)).toEqual([
+      {
+        message: 'Line contains trailing spaces',
+        lineNumber: 1,
+        startColumnNumber: 14,
+        endColumnNumber: 15,
+        severity: Severity.Warning
+      }
+    ])
+  })
+})