Basic transaction categories CRUD actions (inline) (#601)

* Fix dropdown issues and add dummy transaction category modal

* Minor namings tweaks

* Add search type

* Use new menu controller

* Complete basic transaction category inline CRUD actions

* Fix lint error

---------

Co-authored-by: Jakub Kottnauer <jk@jakubkottnauer.com>

app/controllers/transactions/categories_controller.rb

@@ -0,0 +1,34 @@
+class Transactions::CategoriesController < ApplicationController
+  before_action :set_category, only: [ :update, :destroy ]
+
+  def create
+    if Current.family.transaction_categories.create(category_params)
+      redirect_to transactions_path, notice: t(".success")
+    else
+      render transactions_path, status: :unprocessable_entity, notice: t(".error")
+    end
+  end
+
+  def update
+    if @category.update(category_params)
+      redirect_to transactions_path, notice: t(".success")
+    else
+      render transactions_path, status: :unprocessable_entity, notice: t(".error")
+    end
+  end
+
+  def destroy
+    @category.destroy!
+    redirect_to transactions_path, notice: t(".success")
+  end
+
+  private
+
+  def set_category
+    @category = Current.family.transaction_categories.find(params[:id])
+  end
+
+  def category_params
+    params.require(:transaction_category).permit(:name, :name, :color)
+  end
+end