Add LGTM configuration file (#98)

dan4thewin · web-flow · commit d873af42b58b · 2021-06-09T21:12:50.000-04:00
This is an experiment to try LGTM code analysis and is orthogonal to coreJSON itself.  LGTM refuses to let me do this on my fork.
diff --git a/.lgtm.yml b/.lgtm.yml
@@ -0,0 +1,5 @@
+extraction:
+  cpp:
+    index:
+      build_command:
+        - 'CFLAGS=-Iinclude -ansi -Wall -Wextra -Wpedantic -Werror' make -C source core_json.o
