Add repository layer to the project.

Acceptance Criteria:
Flyway added
Schema for database added
Spring Data added
Entities added
H2 database for testing purposes added
integration tests for with h2 added

As a User, I want to set inactive subscriptions

Acceptance criteria:

/stop command added

Create skeleton Spring boot project for JRTB.

Acceptance criteria:
Spring boot project created.

Create stub telegram-bot for the project.

Acceptance criteria:
stub answer via telegram-bot added to the project

As an administrator, I want to see bot statistics.

Acceptance Criteria:

the ability to work with statistics only for administrators added
statistics by active users added
statistics by active group subscriptions added

As a user, I want to get new articles no later than 20 minutes since the article was created.
For it, needs to be implemented Spring Scheduler.

Every 15 minutes the newly created service will :

find all active subscriptions(subscription, which linked to the active user)
find all new articles for active subscriptions
send new articles for users
Acceptance criteria:

Spring scheduler added to the project with task every 15 minutes
Logic for getting new articles added
The scheduling process for finding new articles for an active subscription must be followed by this workflow:

As a user, I want to see list of my group subscriptions

Acceptance criteria:

/listGroupSub command added

As a User, I want to start working with bot OR set active if I used it before

Acceptance criteria:

/start command added

Implement deployment process using docker image.

Acceptance criteria:

dockerfile added to the project.
deployment process with providing environment variables is added to the project.

As a User, I want to remove group subscription from my subscriptions

Acceptance criteria:

/removeGroupSub added

As a user, I want to see the documentation for this telegram bot.

Acceptance criteria:

/help command added

Description
The scheduling process for finding new articles for an active subscription must be followed by this workflow:

Acceptance Criteria:
find new articles workflow implemented as expected

Implement Command pattern for telegram bot.

Acceptance criteria:
/start stub command added

As a user, I want to add the group to the subscription

Acceptance criteria:
/addGroupSub command added
tests for it created