Remove module structure from nezabx

Nexabx is an application and not Go library,
so there is no need to use module structure
in module name.

go.mod

@@ -1,4 +1,4 @@
-module github.com/alexvanin/nezabx
+module nezabx
 
 go 1.18
 

main.go

@@ -7,9 +7,10 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/alexvanin/nezabx/db"
-	"github.com/alexvanin/nezabx/notifications/email"
-	"github.com/alexvanin/nezabx/runners"
+	"nezabx/db"
+	"nezabx/notifications/email"
+	"nezabx/runners"
+
 	"github.com/robfig/cron/v3"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"

runners/command.go

@@ -10,8 +10,9 @@ import (
 	"strings"
 	"time"
 
-	"github.com/alexvanin/nezabx/db"
-	"github.com/alexvanin/nezabx/notifications/email"
+	"nezabx/db"
+	"nezabx/notifications/email"
+
 	"github.com/google/shlex"
 	"github.com/robfig/cron/v3"
 	"go.uber.org/zap"