Initial commit

Proof-of-concept implementation. Bugs will occur.

internal/application/errors.go

@@ -0,0 +1,10 @@
+package application
+
+import "errors"
+
+var (
+	ErrApplication               = errors.New("application")
+	ErrConfigInitializationError = errors.New("config initialization error")
+	ErrConnectDependencies       = errors.New("failed to connect dependencies")
+	ErrDomainInit                = errors.New("failed to initialize domains")
+)