Generate a static parser, move tests to vis_type_timelion (#55299)

* Use generated parser, move tests to vis_type_timelion

* Remove legacy tests

* Create a grunt task for generating a parser

Author: sulemanof

.eslintignore

@@ -9,6 +9,7 @@ bower_components
 /built_assets
 /html_docs
 /src/plugins/data/common/es_query/kuery/ast/_generated_/**
+/src/legacy/core_plugins/vis_type_timelion/public/_generated_/**
 src/legacy/core_plugins/vis_type_vislib/public/vislib/__tests__/lib/fixtures/mock_data
 /src/legacy/ui/public/angular-bootstrap
 /src/legacy/ui/public/flot-charts

src/legacy/core_plugins/vis_type_timelion/README.md

@@ -0,0 +1,10 @@
+# Vis type Timelion
+
+# Generate a parser
+If your grammar was changed in `public/chain.peg` you need to re-generate the static parser. You could use a grunt task:
+
+```
+grunt peg:timelion_chain
+```
+
+The generated parser will be appeared at `public/_generated_` folder, which is included in `.eslintignore`