Action Manager (#2050)

<!--
 Change Github PR Title 

 Your title must be in the following format: 
 - `topic(Area): Feature`
- `Topic` must be one of
`build|ci|docs|feat|fix|perf|refactor|chore|test`

 Sample Titles:
 - `feat(Enterprise)`: Backups can now get credentials from IAM
 - `fix(Query)`: Skipping floats that cannot be Marshalled in JSON
 - `perf: [Breaking]` json encoding is now 35% faster if SIMD is present
 - `chore`: all chores/tests will be excluded from the CHANGELOG
 -->

## Problem
 <!--
 Please add a description with these things:
 1. Explain the problem by providing a good description.
 2. If it fixes any GitHub issues, say "Fixes #GitHubIssue".
 3. If it corresponds to a Jira issue, say "Fixes DGRAPH-###".
4. If this is a breaking change, please prefix `[Breaking]` in the
title. In the description, please put a note with exactly who these
changes are breaking for.
 -->

## Solution
 <!--
 Please add a description with these things:
 1. Explain the solution to make it easier to review the PR.
2. Make it easier for the reviewer by describing complex sections with
comments.
 -->

docs/content/projects-using-badger/index.md

@@ -58,5 +58,6 @@ Below is a list of known projects that use Badger:
 * [DVID](https://github.com/janelia-flyem/dvid) - A dataservice for branched versioning of a variety of data types. Originally created for large-scale brain reconstructions in Connectomics.
 * [KVS](https://github.com/tauraamui/kvs) - A library for making it easy to persist, load and query full structs into BadgerDB, using an ownership hierarchy model.
 * [LLS](https://github.com/Boc-chi-no/LLS) - LLS is an efficient URL Shortener that can be used to shorten links and track link usage. Support for BadgerDB and MongoDB. Improved performance by more than 30% when using BadgerDB
+* [ActionManager](https://mftlabs.io/actionmanager) - A dynamic entity manager based on rjsf schema and badger db
 
 If you are using Badger in a project please send a pull request to add it to the list.