Support branch specific databases for dev

Following instruction from fractaledmind in this post:

https://fractaledmind.github.io/2023/09/06/enhancing-rails-sqlite-branch-databases/

I‘m only adding this feature for development of the primary data store.
I don‘t anticipate cache, queue, and cable databases needing to change
often so leaving them out of branch-specific support for the time being.

Author: rossta

config/database.yml

@@ -14,7 +14,7 @@ default: &default
 development:
   primary:
     <<: *default
-    database: storage/development/data.sqlite3
+    database: storage/development/data-<%= (`git branch --show-current`.chomp || 'default').parameterize %>.sqlite3
   cache:
     <<: *default
     database: storage/development/cache.sqlite3

config/environments/development.rb

@@ -99,4 +99,10 @@
   else
     "POSTMARK_API_TEST"
   end
+
+  # With branch-specific databases for development defined in config/database.yml
+  # we need to prepare the databases before starting the server
+  config.after_initialize do
+    ActiveRecord::Tasks::DatabaseTasks.prepare_all
+  end
 end