feat: implement timeline2 component - INNO-1546 (#102)

* INNO-1546 Timeline component without JS

* INNO-1546 Test updates

* INNO-1546 add missing dependency in ec-components

* INNO-1546 update tests and add js

* INNO-1546 bugfixes and cleanup

* INNO-1546 update docs

* INNO-1546 update button component and documentation

* INNO-1546 Undo button extra classes and use transform property

* INNO-1546 remove trailing commas and remove correct dependency

* INNO-1546 simplify the timeline component

* Revert "INNO-1546 simplify the timeline component"

This reverts commit 97ddf18.

* INNO-1546 update component with from - to

* INNO-1546 test updates and 0 to scenario

* INNO-1546 add logic for positive to, tests improvements, knobs

* INNO-1546: Improve code readability

* INNO-1546 give the comment some space

src/ec/packages/ec-component-timeline/.npmignore

@@ -0,0 +1,4 @@
+__snapshots__
+*.story.js
+*.test.js
+**/*.md

src/ec/packages/ec-component-timeline/README.md

@@ -0,0 +1,7 @@
+# ECL Twig - EC Timeline component
+
+npm package: `@ecl-twig/ec-component-timeline`
+
+```shell
+npm install --save @ecl-twig/ec-component-timeline
+```