Add NeoVim test runner

For the queries that can't be tested with `tree-sitter` itself.

queries/indents.scm

@@ -0,0 +1,22 @@
+; Expressions {{{
+(list_expression) @indent.begin
+
+(list_expression
+  "]" @indent.branch)
+
+(map_expression) @indent.begin
+
+(map_expression
+  "}" @indent.end)
+
+(assignment) @indent.begin ; FIXME: do I need it?
+; }}}
+
+; Declarations {{{
+(module) @indent.begin
+
+(module
+  ")" @indent.end)
+(module
+  "}" @indent.end)
+; }}}