Add falco engine info to --support output
Add falco engine info to --support output

In some cases, it might be useful to know what falco engine version a
given falco binary supports. We already have a --support option that
prints info about the system, config, rules files, etc.

Add a engine_info object, with an engine_version property containing the
falco engine version in falco_engine_version.h. In the output, it looks
like this:

...
  "engine_info": {
      "engine_version": 8
   },
...

Signed-off-by: Mark Stemm <1b6cbc2e568a933a16c6fa30b73e50cd507debf7@gmail.com>

draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco