Move files to ruby subfolder

ruby/ql/test/query-tests/diagnostics/src/bar.erb

@@ -0,0 +1,2 @@
+<%# comment -%>
+blah

ruby/ql/test/query-tests/diagnostics/src/foo.rb

@@ -0,0 +1,9 @@
+# comment
+
+def hello
+  p "hello world"
+end
+
+# another one
+
+hello

ruby/ql/test/query-tests/diagnostics/src/not_ruby.rb

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+# This is a bash script
+export FOO="$(whereis ls)"
+exec "$FOO" "$(dirname "$0")"

ruby/ql/test/query-tests/diagnostics/src/unsupported_feature.rb

@@ -0,0 +1,3 @@
+case foo
+  in 3 then 5
+end

ruby/ql/test/query-tests/diagnostics/src/vendor/cache/lib.rb

@@ -0,0 +1,9 @@
+# comment
+
+def hello
+  p "hello lib"
+end
+
+# another one
+
+hello