feat: Add Platform APIs (#1456)

app/controllers/platform/api/v1/accounts_controller.rb

@@ -0,0 +1,32 @@
+class Platform::Api::V1::AccountsController < PlatformController
+  def create
+    @resource = Account.new(account_params)
+    @resource.save!
+    @platform_app.platform_app_permissibles.find_or_create_by(permissible: @resource)
+    render json: @resource
+  end
+
+  def show
+    render json: @resource
+  end
+
+  def update
+    @resource.update!(account_params)
+    render json: @resource
+  end
+
+  def destroy
+    # TODO: obfusicate account
+    head :ok
+  end
+
+  private
+
+  def set_resource
+    @resource = Account.find(params[:id])
+  end
+
+  def account_params
+    params.permit(:name)
+  end
+end