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/bit.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:        "bit",
 		Description: "Bit documentation: https://bit.dev/docs",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "init", Description: "Create or reinitialize an empty workspace"},
 			{Name: "new", Description: "Create a new workspace from a template"},
 			{Name: "config", Description: "Global config management"},
@@ -60,7 +60,7 @@ func init() {
 			{Name: "component-names", Description: "Names or IDs of the components to link"},
 			{Name: "component-issues", Description: "List available component-issues"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "--bare", Description: "Initialize an empty bit bare scope"},
 			{Name: "--shared", Description: "Add group write permissions to a scope"},
 			{Name: "--standalone", Description: "Do not nest component store within .git"},