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/supabase.go

@@ -1,14 +1,14 @@
 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:        "supabase",
 		Description: "Supabase CLI",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "completion", Description: "Generate the autocompletion script for the specified shell"},
 			{Name: "bash", Description: "Generate the autocompletion script for bash"},
 			{Name: "fish", Description: "Generate the autocompletion script for fish"},
@@ -53,7 +53,7 @@ func init() {
 			{Name: "stop", Description: "Stop all local Supabase containers"},
 			{Name: "help", Description: "Help about any command"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "--no-descriptions", Description: "Disable completion descriptions"},
 			{Name: "--file", Description: "Saves schema diff to a file"},
 			{Name: "--schema", Description: "List of schema to include"},