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/cc/typst.go

@@ -1,14 +1,14 @@
 package cc
 
 import (
-	"github.com/versenilvis/iris/commands/core"
+	"github.com/versenilvis/iris/spec"
 )
 
 func init() {
-	core.Register(&core.Spec{
+	spec.Register(&spec.Spec{
 		Name:        "typst",
 		Description: "The Typst compiler",
-		Subcommands: []core.Subcommand{
+		Subcommands: []spec.Subcommand{
 			{Name: "compile", Description: "Compiles an input file into a supported output format"},
 			{Name: "input", Description: "Path to input Typst file"},
 			{Name: "output", Description: "Path to output file (PDF, PNG, or SVG)"},
@@ -20,7 +20,7 @@ func init() {
 			{Name: "version", Description: "Which version to update to (defaults to latest)"},
 			{Name: "help", Description: "Print this message or the help of the given subcommand(s)"},
 		},
-		Options: []core.Option{
+		Options: []spec.Option{
 			{Name: "--root", Description: "Configures the project root (for absolute paths)"},
 			{Name: "--font-path", Description: "Adds additional directories to search for fonts"},
 			{Name: "--diagnostic-format", Description: "The format to emit diagnostics in"},