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/sys/prisma.go

@@ -1,14 +1,14 @@
 package sys
 
 import (
-	"github.com/versenilvis/iris/commands/core"
+	"github.com/versenilvis/iris/spec"
 )
 
 func init() {
-	core.Register(&core.Spec{
+	spec.Register(&spec.Spec{
 		Name:        "prisma",
 		Description: "Display this help message",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "init", Description: "Setup Prisma for your app"},
 			{Name: "generate", Description: "Generate artifacts (e.g. Prisma Client)"},
 			{Name: "studio", Description: "Open Prisma Studio"},
@@ -19,7 +19,7 @@ func init() {
 			{Name: "db", Description: "Manage your database schema and lifecycle (Preview)"},
 			{Name: "version", Description: "Print current version of Prisma components"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "-h", Description: "Display this help message"},
 			{Name: "--schema", Description: "Custom path to your Prisma schema"},
 			{Name: "--skip-seed", Description: "Skip triggering seed"},