etc: add vim script to help convert C++ tests to pytest

Author: james-d-mitchell

etc/catch-cpp-to-pytest.vim

@@ -0,0 +1,13 @@
+function! CatchCPPToPytest()
+  silent '<,'>s/{/[/ge
+  silent '<,'>s/}/]/ge
+  silent '<,'>s/::/./ge
+  silent '<,'>s/true/True/ge
+  silent '<,'>s/false/False/ge
+  silent '<,'>s/;//ge
+  silent '<,'>s/REQUIRE(\([^)]*\))/assert \1/ge
+  silent '<,'>s/<[^>]*>//ge
+endfunction
+
+map! <F1> <ESC>:call CatchCPPToPytest()<CR>i
+map <F1> :call CatchCPPToPytest()<CR>