refactor(commands): separate commands and its core into two folders (#32)

- I think it would be better if one for commands only, one for the spec
handling core logic so people won't be confused by the core logic inside
the commands folder (cleaner I guess)
- Regen docs

commands/ops/qodana.go

@@ -1,20 +1,20 @@
 package ops
 
 import (
-	"github.com/versenilvis/iris/commands/core"
+	"github.com/versenilvis/iris/spec"
 )
 
 func init() {
-	core.Register(&core.Spec{
+	spec.Register(&spec.Spec{
 		Name:        "qodana",
 		Description: "Run Qodana as fast as possible, with minimum effort required",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "init", Description: "Configure project for Qodana"},
 			{Name: "scan", Description: "Scan a project with Qodana"},
 			{Name: "show", Description: "Show Qodana report"},
 			{Name: "view", Description: "View SARIF files in CLI"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "-h", Description: "Show help page for command"},
 			{Name: "-v", Description: "Version for Qodana"},
 			{Name: "-i", Description: "Scan a project with Qodana"},