[graphql] Convert to using the new query interpreter runtime

What does this MR do?

Convert to using the GraphQL - Interpreter

Going straight to the latest, 1.13.12

Related to: #210556 (closed)

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app/graphql/gitlab_schema.rb

@@ -10,14 +10,25 @@ class GitlabSchema < GraphQL::Schema
   DEFAULT_MAX_DEPTH = 15
   AUTHENTICATED_MAX_DEPTH = 20
 
+  if Feature.enabled?(:graphql_interpeter)
+    use GraphQL::Execution::Interpreter
+    # And, when you have updated your analyzers:
+    use GraphQL::Analysis::AST
+  end
+
   use GraphQL::Pagination::Connections
   use BatchLoader::GraphQL
   use Gitlab::Graphql::Pagination::Connections
   use Gitlab::Graphql::GenericTracing
   use Gitlab::Graphql::Timeout, max_seconds: Gitlab.config.gitlab.graphql_timeout
 
-  query_analyzer Gitlab::Graphql::QueryAnalyzers::LoggerAnalyzer.new
-  query_analyzer Gitlab::Graphql::QueryAnalyzers::RecursionAnalyzer.new
+  if Feature.enabled?(:graphql_interpeter)
+    query_analyzer Gitlab::Graphql::QueryAnalyzers::AST::LoggerAnalyzer
+    query_analyzer Gitlab::Graphql::QueryAnalyzers::AST::RecursionAnalyzer
+  else
+    query_analyzer Gitlab::Graphql::QueryAnalyzers::LoggerAnalyzer.new
+    query_analyzer Gitlab::Graphql::QueryAnalyzers::RecursionAnalyzer.new
+  end
 
   max_complexity DEFAULT_MAX_COMPLEXITY
   max_depth DEFAULT_MAX_DEPTH