[Arch+Docs]: move cli tool so we can exec the go command

README.md

@@ -1,7 +1,10 @@
 # gitdl
- git downloader for specific folder
+git downloader for specific folder
 
- you can use it like this in your code:
+## cli:
+you can run the cli with `go run github.com/4lxprime/gitdl -h` from anywhere on your system as long as you have go installed.
+
+## code:
 ```golang
 if err := gitdl.DownloadGit(
     "torvalds/linux",   // base the clone on https://github.com/torvalds/linux
@@ -10,9 +13,10 @@ if err := gitdl.DownloadGit(
     gitdl.WithBranch("master"),                             // base the clone on the master branch (default main)
     gitdl.WithExclusions("configs/*", "async.c"),           // exclude everything in configs/ and exclude async.c
     gitdl.WithReplace(gitdl.Map{"linux", "linuxisbetter"})  // everytime "linux" is mentionned, it will be remplaced by "linuxisbetter"
+    gitdl.WithLogs,                                         // you want to enable log
+    gitdl.WithAuth("ghp_*")                                 // use your github auth token so you can have likely unlimited requests
+    gitdl.WithoutChecksum                                   // don't care about security (not recommended) 
 ); err != nil {
     log.Fatal(err)
 }
 ```
-
- or you can just use the cli tool with `go run cmd/gitdl/main.go -repo=torvalds/linux -folder=kernel -output=linux_kernel -logs` but there is no every options.

cli.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"strings"
+)
+
+func main() {
+	repoFlag := flag.String("repo", "", "[required] the repo you want to download folder from")
+	folderFlag := flag.String("folder", "/", "[optional] folder you want to download from repo")
+	branchFlag := flag.String("branch", "main", "[optional] the branch you want to clone")
+	authFlag := flag.String("auth", "", "[optional] your github auth token")
+	outputFlag := flag.String("output", "", "[optional] local output folder")
+	logsFlag := flag.Bool("logs", true, "[optional] display downloading logs")
+	noChecksumFlag := flag.Bool("nochecksum", false, "[optional] disable downloading checksum")
+
+	flag.Parse()
+
+	if *repoFlag == "" {
+		log.Fatal(fmt.Errorf("you should specify the repo you want to clone (e.g. gitdl -folder=/ -output=gitdl 4lxprime/gitdl)"))
+	}
+
+	if !strings.Contains(*repoFlag, "/") {
+		log.Fatal(fmt.Errorf("repo argument must contains / (e.g. 4lxprime/gitdl or github.com/4lxprime/gitdl)"))
+	}
+
+	if *outputFlag == "" {
+		repoSplit := strings.Split(*repoFlag, "/")
+		repoName := repoSplit[len(repoSplit)-1]
+
+		*outputFlag = repoName
+	}
+
+	var options []Option
+
+	if *logsFlag {
+		options = append(options, WithLogs)
+	}
+
+	if *noChecksumFlag {
+		options = append(options, WithoutChecksum)
+	}
+
+	if *authFlag != "" {
+		options = append(options, WithAuth(*authFlag))
+	}
+
+	options = append(options, WithBranch(*branchFlag)) // default set to main
+
+	if err := DownloadGit(
+		*repoFlag,
+		*folderFlag,
+		*outputFlag,
+		options...,
+	); err != nil {
+		log.Fatal(err)
+	}
+
+	if *logsFlag {
+		log.Println("download completed successfully")
+	}
+}

gitdl.go

@@ -1,4 +1,4 @@
-package gitdl
+package main
 
 import (
 	"bytes"