feat(fortran): Support indentation

queries/fortran/indents.scm

@@ -0,0 +1,27 @@
+[
+  (module)
+  (program)
+  (subroutine)
+  (function)
+  ; (interface)
+  (if_statement)
+  (do_loop_statement)
+  (where_statement)
+  (derived_type_definition)
+  (enum)
+] @indent
+
+[
+  (end_module_statement)
+  (end_program_statement)
+  (end_subroutine_statement)
+  (end_function_statement)
+  ; (end_interface_statement)
+  (end_if_statement)
+  (end_do_loop_statement)
+  (else_clause)
+  (elseif_clause)
+  (end_type_statement)
+  (end_enum_statement)
+  (end_where_statement)
+] @branch