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/js/nx.go

@@ -1,14 +1,14 @@
 package js
 
 import (
-	"github.com/versenilvis/iris/commands/core"
+	"github.com/versenilvis/iris/spec"
 )
 
 func init() {
-	core.Register(&core.Spec{
+	spec.Register(&spec.Spec{
 		Name:        "nx",
 		Description: "All projects",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "init", Description: "Adds nx.json file and installs nx if not installed already"},
 			{Name: "daemon", Description: "Prints information about the Nx Daemon process or starts a daemon process"},
 			{Name: "graph", Description: "Graph dependencies within workspace"},
@@ -31,7 +31,7 @@ func init() {
 			{Name: "show", Description: "Show information about the workspace (e.g., list of projects)"},
 			{Name: "object", Description: "What to show (e.g., projects)"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "--all", Description: "All projects"},
 			{Name: "--base", Description: "Base of the current branch (usually main)"},
 			{Name: "--commitPrefix", Description: "Automatically create a git commit after each migration runs"},