Feature/csv table (#500)

- added csv-replacer
- changed highlghted-code plugin:
     each replacer extracts what he need from the data-extra attribute now
- changed CHANGELOG.md

Co-authored-by: Erik Michelson <github@erik.michelson.eu>

src/components/markdown-renderer/replace-components/csv/csv-parser.test.ts

@@ -0,0 +1,21 @@
+import { parseCsv } from './csv-parser'
+
+describe('test CSV parser', () => {
+  it('normal table', () => {
+    const input = 'A;B;C\nD;E;F\nG;H;I'
+    const expected = [['A', 'B', 'C'], ['D', 'E', 'F'], ['G', 'H', 'I']]
+    expect(parseCsv(input, ';')).toEqual(expected)
+  })
+
+  it('blank lines', () => {
+    const input = 'A;B;C\n\nG;H;I'
+    const expected = [['A', 'B', 'C'], ['G', 'H', 'I']]
+    expect(parseCsv(input, ';')).toEqual(expected)
+  })
+
+  it('items with delimiter', () => {
+    const input = 'A;B;C\n"D;E;F"\nG;H;I'
+    const expected = [['A', 'B', 'C'], ['"D;E;F"'], ['G', 'H', 'I']]
+    expect(parseCsv(input, ';')).toEqual(expected)
+  })
+})