Add syntax validator gh action

Signed-off-by: Jakub Klímek <[email protected]>

.github/workflows/v2.yml

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+name: Validator2
+
+on:
+  push:
+  pull_request:
+    branches:
+    - master
+    - develop
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Data validator
+      uses: datagov-cz/data-validator/github@master
+      with:
+        configuration: file://./.github/workflows/validate-syntax.ttl

.github/workflows/validate-syntax.ttl

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+@prefix dash: <http://datashapes.org/dash#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix schema: <http://schema.org/> .
+@prefix sh: <http://www.w3.org/ns/shacl#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+# Configuration for syntax validation.
+<http://localhost/configuration> a <urn:DataValidatorConfiguration> ;
+    <urn:rule>  [
+		<urn:pattern> ".*.jsonld" ;
+		<urn:validator>
+            [ a <urn:TitaniumJsonLdSyntax> ; ] 
+    ], [
+		<urn:pattern> ".*.json", ".*.jsonld" ;
+		<urn:validator>
+			[ a <urn:JacksonJsonSyntax> ; ] 
+	], [
+		<urn:pattern> ".*.ttl", ".*.trig", ".*.nq", ".*.nt", ".*.rdf" ;
+		<urn:validator>
+			[ a <urn:JenaRdfSyntax> ; ] 
+	], [
+		<urn:pattern> ".*.xml" ;
+		<urn:validator>
+			[ a <urn:Dom4jXmlSyntax> ; ] 
+	] ;	
+	<urn:recursive> true ;
+	# Can be changed from the command line.
+    <urn:path> "./" ;    
+.