fix: update kafee consumer handle_failure/2 fn (#119)

## Related Ticket(s)

N/A

## Checklist

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- [X] Code conforms to the [Elixir
Styleguide](https://github.com/christopheradams/elixir_style_guide)

## Problem

The built in `Kafee.Consumer.handle_failure/2` function raises an error
which causes problems down the line. It should instead return an `:ok`
like the behaviour specifies.

## Details

Change `raise RuntimeError` to `Logger.error`

---------

Co-authored-by: Jonathan Thomas <[email protected]>

lib/kafee/consumer.ex

@@ -192,6 +192,8 @@ defmodule Kafee.Consumer do
   @doc false
   defmacro __using__(opts \\ []) do
     quote location: :keep, bind_quoted: [opts: opts, module: __CALLER__.module] do
+      require Logger
+
       @behaviour Kafee.Consumer
 
       @doc false
@@ -227,19 +229,15 @@ defmodule Kafee.Consumer do
 
       @impl Kafee.Consumer
       def handle_failure(error, %Kafee.Consumer.Message{} = message) do
-        inspected_message = inspect(message)
-        inspected_error = inspect(error)
-
-        raise RuntimeError,
-          message: """
+        Logger.error(
+          """
           An error has been raised while processing a Kafka message.
 
-          Message:
-          #{inspected_message}
-
           Error:
-          #{inspected_error}
-          """
+          #{inspect(error)}
+          """,
+          error: error
+        )
       end
 
       defoverridable child_spec: 1, handle_message: 1, handle_failure: 2