Add AuthUser model, connecting to openneo_id db

No user-facing functionality here yet, just configuring the database connection to work with openneo_id records.

This is a first step in integrating Devise stuff into this app instead of connecting with a weird second app.

My basic testing for this was to temporarily connect to production `openneo_id`, and see `AuthUser.first` correctly return a user!

Vagrantfile

@@ -81,6 +81,8 @@ Vagrant.configure("2") do |config|
     mysql -e "CREATE USER IF NOT EXISTS openneo_impress IDENTIFIED BY 'openneo_impress';"
     mysql -e "CREATE DATABASE IF NOT EXISTS openneo_impress;"
     mysql -e "GRANT ALL PRIVILEGES ON openneo_impress.* TO openneo_impress;"
+    mysql -e "CREATE DATABASE IF NOT EXISTS openneo_id;"
+    mysql -e "GRANT ALL PRIVILEGES ON openneo_id.* TO openneo_impress;"
     echo 'When you log in as vagrant, run `rbenv init` and follow the instructions!'
     echo 'Then, run `bundle install`, and `rake db:schema:load && rake db:seed`!'
   SHELL

app/models/auth_record.rb

@@ -0,0 +1,5 @@
+class AuthRecord < ApplicationRecord
+  self.abstract_class = true
+
+  connects_to database: {reading: :openneo_id, writing: :openneo_id}
+end

app/models/auth_user.rb

@@ -0,0 +1,3 @@
+class AuthUser < AuthRecord
+  self.table_name = 'users'
+end

db/openneo_id_schema.rb

@@ -0,0 +1,36 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema[7.0].define(version: 0) do
+  create_table "users", id: { type: :integer, unsigned: true }, charset: "utf8", force: :cascade do |t|
+    t.string "name", limit: 20, null: false
+    t.string "encrypted_password", limit: 64, null: false
+    t.string "email", limit: 50, null: false
+    t.string "password_salt", limit: 32, null: false
+    t.string "reset_password_token"
+    t.integer "sign_in_count", default: 0
+    t.datetime "current_sign_in_at", precision: nil
+    t.datetime "last_sign_in_at", precision: nil
+    t.string "current_sign_in_ip"
+    t.string "last_sign_in_ip"
+    t.integer "failed_attempts", default: 0
+    t.string "unlock_token"
+    t.datetime "locked_at", precision: nil
+    t.datetime "created_at", precision: nil
+    t.datetime "updated_at", precision: nil
+    t.datetime "reset_password_sent_at", precision: nil
+    t.index ["email"], name: "index_users_on_email", unique: true
+    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
+    t.index ["unlock_token"], name: "index_users_on_unlock_token", unique: true
+  end
+
+end