adr: add a naming convention for events in the system

Signed-off-by: Login Victor <batazor@evrone.com>

docs/architecture/decisions/0002-implement-as-event-naming.md

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+# 2. Implement as event naming
+
+Date: 2022-08-24
+
+## Status
+
+Accepted
+
+## Context
+
+- Need set Event naming
+
+## Decision
+
+We will stick to the following format of naming system events: **shortlink.link.event.new**
+
+Where:
+- **shortlink** is the name of the all system
+- **link** is the domain name of the system
+- **event** event trait
+- **new** is the name of the event
+
+Example:
+
+```go
+// MQ events
+const (
+	// MQ_EVENT_LINK_NEW - subscribe on request created link
+	MQ_EVENT_LINK_NEW = "shortlink.link.event.new"
+
+	// MQ_EVENT_LINK_CREATED - subscribe on created link
+	MQ_EVENT_LINK_CREATED = "shortlink.link.event.created"
+)
+```
+
+## Consequences
+
+We get a single naming convention for events in the system.