This commit only adds these handlers at the `Primer.App` module level.
Hooking the interpreter up to the API and HTTP service will come in
subsequent commits.

Note that we add two handlers, one for time-bounded requests, and one
for unbounded requests. We will not expose the unbounded handler via
the HTTP API, since that would not be safe, but for local Haskell
programs, it might be useful to run the unbounded interpreter and
handle exceptions, timeouts, etc. in an application-specific manner,
which the time-bounded interpreter doesn't really make possible.

The time-bounded handler needs an additional `MonadIO` constraint
because the variant of the interpreter that it uses handles timeouts
and other imprecise exceptions that may be thrown by the interpreter.
This is unlike any other actions in `Primer.App`, but it's unavoidable
due to our particular lazy implementation of the interpreter. (See the
comments in the interpreter source for details.)

Signed-off-by: Drew Hess <src@drewhess.com>

This test change is a separate commit to the parent commit because it
requires a change to `EditAppM`, namely adding a `MonadIO` instance to
it. Prior to this change, no action tests required `IO`.

Signed-off-by: Drew Hess <src@drewhess.com>

Signed-off-by: Drew Hess <src@drewhess.com>

Signed-off-by: Drew Hess <src@drewhess.com>

Note that all of these tests that use the interpreter are currently
expected to fail (or are commented out because they will fail) due to
#1247

Signed-off-by: Drew Hess <src@drewhess.com>

The Wasm version of this test needs more time.

Signed-off-by: Drew Hess <src@drewhess.com>