Add cypress-on-rails support

Enables: ManageIQ/manageiq-ui-classic#9633

We add this to core so the railtie in cypress-on-rails can hook into the rails
app startup as needed:
https://github.com/shakacode/cypress-playwright-on-rails/blob/d50de890b345879205124fa4de52bf899d9df2d0/lib/cypress_on_rails/railtie.rb#L6

Note, this could be pushed down to UI Classic, see below, but this has a few
problems:

1) Core already has bundler groups for development and test that these nicely
fit into.  This allows us to easily exclude them from different installation
scenarios such as smaller deployments with just the required runtime
dependencies.

2) UI-Classic is a gem engine that gets pulled in, so only the runtime
dependencies are resolved and available.  Therefore, we would need to add these
test gems as runtime dependencies which sends the wrong message and makes it
difficult to exclude.

Alternative setup (not suggested):

a) Remove it from core:

```diff --git a/Gemfile b/Gemfile
index cd45015..b62ae61 100644
--- a/Gemfile
+++ b/Gemfile
@@ -326,7 +326,4 @@ group :development, :test do
   gem "parallel_tests",                 "~>4.4", :require => false
   gem "routes_lazy_routes"
   gem "rspec-rails",                    "~>7.0"
-  gem "cypress-on-rails",               "~>1.17.0" # Need railtie to be loaded with rails app
-  gem "factory_bot_rails"
-  gem "database_cleaner",               "~>2.1"
 end
```

b) Require it in UI-Classic's Engine and add the gems to the gemspec:

```diff --git a/lib/manageiq/ui/classic/engine.rb b/lib/manageiq/ui/classic/engine.rb
index dc72a001ec..cf420620c1 100644
--- a/lib/manageiq/ui/classic/engine.rb
+++ b/lib/manageiq/ui/classic/engine.rb
@@ -36,6 +36,8 @@ module ManageIQ
           config.assets.js_compressor = :manageiq_ui_classic_js_compressor
         end

+        require 'cypress-on-rails' if ENV['CYPRESS'].present?
+
         def self.vmdb_plugin?
           true
         end
diff --git a/manageiq-ui-classic.gemspec b/manageiq-ui-classic.gemspec
index cef587a45a..3ed378abed 100644
--- a/manageiq-ui-classic.gemspec
+++ b/manageiq-ui-classic.gemspec
@@ -31,7 +31,10 @@ Gem::Specification.new do |s|
   s.add_dependency "uglifier", "~>4.2.0"
   s.add_dependency "webpacker", "~>2.0.0"

-  s.add_development_dependency "cypress-on-rails", "~> 1.0"
+  s.add_dependency "cypress-on-rails", "~>1.17.0"
+  s.add_dependency "factory_bot_rails"
+  s.add_dependency "database_cleaner", "~>2.1"
+
```

Author: jrafanie

Gemfile

@@ -323,6 +323,9 @@ group :test do
 end
 
 group :development, :test do
+  gem "cypress-on-rails",               "~>1.17.0" # This is needed so the railtie can hook into the rails app startup
+  gem "database_cleaner",               "~>2.1"
+  gem "factory_bot_rails"
   gem "parallel_tests",                 "~>4.4", :require => false
   gem "routes_lazy_routes"
   gem "rspec-rails",                    "~>7.0"