Expose interpreter stacktrace as part of host stacktrace (when possible)

[borkdude]

If user catches Exception (or maybe a specialized InterpreterException), we could expose the interpreter stacktrace. This is useful if users want to programmatically print something about where their programs failed.

[borkdude]

I took the approach of keeping the stacktrace around when users catch Exception, but this breaks:

I get one failing case with babashka's CI tests, though, for example with clj-http-lite:
FAIL in (exception-test) (/Users/borkdude/dev/babashka/test-resources/lib_tests/clj_http/lite/client_test.clj:)
expected: (:headers (ex-data e))

2m
borkdude
:clj-kondo: So it might be better to catch a very specific type of exception when you want the interpreter trace. E.g. (catch sci.lang.Exception) to not break libraries (and also for perf reasons probably) (edited)

[borkdude]

Working example:

$ clojure -M:babashka/dev -e "(require '[sci.core :as sci]) (defn foo [] (/ 1 0)) (defn bar [] (try (foo) (catch ^:sci/error Exception e (prn (ex-cause e))))) (bar)"