init adopters commit

Author: Sergey Pronin

Diff for: ADOPTERS.md

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+# Percona Server for MongoDB Operator Adopters
+
+This is the list of organizations and users that publicly shared details of how they are using Percona Operator for running their MongoDB.  Please send PRs to add or remove organizations/users.
+
+The list of organizations that have publicly shared the usage of Percona Server for MongoDB Operator. 
+
+| Organization | Description | Success Story |
+| :--- | :--- | :--- |
+| [Example](https://example.com/) | Example company runs MongoDB on Kubernetes for dev and production for core application | [English](./adopters/example/README.md) |
+
+The list of users that have publicly shared the usage of Percona Server for MongoDB Operator. 
+
+| User | Description | Success Story |
+| :--- | :--- | :--- |
+| [Sergey Pronin](https://github.com/spron-in) | Personal tests for MongoDB | [English](./adopters/users/spron-in/README.md)  | 

Diff for: adopters/example/README.md

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+Company: [Example](https://example.com/)
+
+**Description**
+Running multiple PSMDBs on Kubernetes for core applications
+
+**Are you evaluating or already using in development, CI/CD, production**
+Production, CI/CD
+
+**A brief description of the use case or details on how Percona Operator is helping your projects.**
+- Great replacement for Managed Databases from cloud vendors
+- No vendor lock-in
+- Excellent community and Percona support
+- Quick bug fixes
+

Diff for: adopters/users/spron-in/README.md

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+User: [https://github.com/spron-in](spron-in)
+
+**Description**
+Running PSMDB Operator to deploy MongoDB databases for personal use
+
+**Are you evaluating or already using in development, CI/CD, production**
+Personal use
+
+**Are you using for home use or for your organization**
+Home lab
+
+**A brief description of the use case or details on how Percona Operator is helping your projects.**
+Cheap and out of the box MongoDB database as a replacement for Managed Cloud services and Atlas