Add docs custom id's (#216)

* Addd custom id's to guides

* tweaks

* tweak

---------

Co-authored-by: Paul Bob <[email protected]>

Author: gabrielgiroe1

docs/3.0/guides/custom-ids.md

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+# How to Use Custom IDs with Avo
+Avo seamlessly integrates custom IDs, including popular solutions like FriendlyID, prefixed IDs, or Hashids. Below, you'll find examples illustrating each approach for effortless customization within your application.
+
+## Example with FriendlyID
+
+FriendlyID is a gem that allows you to generate pretty URLs and unique IDs. To integrate FriendlyID with Avo, follow these steps:
+
+**Install [friendly_id](https://github.com/norman/friendly_id) gem by adding this line to your application's Gemfile:**
+
+```ruby
+gem "friendly_id", "~> 5.5.0"
+```
+
+And then execute:
+
+```bash
+bundle install
+```
+
+**Generate and run the migration to add a slug column to your model:**
+
+```bash
+rails generate friendly_id
+rails db:migrate
+```
+
+**Add `friendly_id` to your model:**
+
+```ruby{3,6}
+# app/models/post.rb
+class Post < ApplicationRecord
+  extend FriendlyId
+
+  # This post model have a name column
+  friendly_id :name, use: :finders
+end
+
+```
+
+With this setup, you can use `Post.find("bar")` to find records by their custom IDs.
+
+:::info
+For a version of [friendly_id](https://github.com/norman/friendly_id) smaller then 5.0 you can use [custom query scopes](/3.0/customization.md#custom-query-scopes)
+:::
+View [friendly_id](https://github.com/norman/friendly_id) setup in action: [View Demo](https://main.avodemo.com/avo/resources/users)
+
+Check out the code: [Code on GitHub](https://github.com/avo-hq/main.avodemo.com/blob/main/app/models/user.rb)
+
+## Example with Prefixed IDs
+
+Prefixed IDs involve adding a custom prefix to your IDs.
+
+**Install [prefixed_ids](https://github.com/excid3/prefixed_ids) gem by adding this line to your application's Gemfile:**
+
+```ruby
+gem "prefixed_ids"
+```
+
+And then execute:
+
+```bash
+bundle install
+```
+
+**Basic Usage**
+
+Add `has_prefix_id :my_prefix` to your models to autogenerate prefixed IDs:
+```ruby{3}
+# app/models/post.rb
+class Post < ApplicationRecord
+  has_prefix_id :post
+end
+```
+
+View [prefixed_ids](https://github.com/excid3/prefixed_ids) setup in action: [View Demo](https://main.avodemo.com/avo/resources/teams)
+
+Check out the code: [Code on GitHub](https://github.com/avo-hq/main.avodemo.com/blob/main/app/models/team.rb)
+
+## Example with Hashids
+
+Hashid Rials is a gem that generates short, unique, and cryptographically secure IDs.
+
+**Install [hashid-rails](https://github.com/jcypret/hashid-rails) gem by adding this line to your application's Gemfile:**
+
+```ruby
+gem "hashid-rails", "~> 1.0"
+```
+
+And then execute:
+
+```bash
+bundle install
+```
+
+**Include Hashid Rails in the ActiveRecord model you'd like to enable hashids:**
+
+```ruby{3}
+# app/models/post.rb
+class Post < ApplicationRecord
+  include Hashid::Rails
+end
+```
+
+View [hashid-rails](https://github.com/jcypret/hashid-rails) setup in action: [View Demo](https://main.avodemo.com/avo/resources/spouses)
+
+Check out the code: [Code on GitHub](https://github.com/avo-hq/main.avodemo.com/blob/main/app/models/spouse.rb)