feat(org): adds support for orgmode files (#413)

* feat(org): adds support for orgmode files

* fix(org): fixing the test file

---------

Co-authored-by: Cayetano Carpio <cayetano@carpio.com>

queries/org/context.scm

@@ -0,0 +1,3 @@
+(section
+  body: (_) @context.end
+) @context

test/test.org

@@ -0,0 +1,45 @@
+* a heading
+
+
+
+
+
+
+
+
+
+
+
+** a subheading
+
+
+
+
+
+
+
+
+
+
+* another heading
+
+
+
+
+** a subheading
+
+
+
+
+
+
+*** a subsubheading
+
+
+
+
+
+
+
+
+