Proposal: Add command to autogenerate tests.edn

[alysbrooks]

The easiest way to do this is just to create a very simple tests.edn like the following. This file is trivial, so we're not saving a ton of work, but the convenience might still make it easier for new users:

#kaocha/v1 {}

We could also use the catch-all configuration:

#kaocha/v1
{:tests [{:id          :unit
          :test-paths  ["test" "src"]
          :ns-patterns [".*"]}]
          ;; :reporter kaocha.report.progress/report
          ;; :plugins [:kaocha.plugin/profiling :kaocha.plugin/notifier]
 }

We could try to be slightly smarter about which configuration by using a multistep approach:

1. Generate the bare-bones file.
2. Run Kaocha's test gathering using the bare-bones file.
3. If no tests are found, prompt user to ask whether they want the catch-all.
4. If so, run Kaocha's test gathering using the catch-all
5. Report results.

A more complicated but still doable approach would be to search the project to identify folders that contain namespaces with "test" in the name or that require the clojure.test namespace.

[alysbrooks]

Along similar lines, neil adds an alias to deps.edn.

[alysbrooks]

I think we want to direct our focus on improving ergonomics toward making it easier to get started with kaocha-cljs2. A PR for this would be great, though.