added scripts and 2020 folder

scripts/fetchers/cmd-inputs/inputs.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/alexchao26/advent-of-code-go/scripts/fetchers"
+	"github.com/alexchao26/advent-of-code-go/util"
+)
+
+func main() {
+	// determine day to fetch
+	day, year, cookie := fetchers.ParseFlags()
+	fmt.Println("fetching for day", day)
+
+	// make the request
+	url := fmt.Sprintf("https://adventofcode.com/%d/day/%d/input", year, day)
+	body := fetchers.GetWithAOCCookie(url, cookie)
+
+	// write to file
+	filename := filepath.Join(util.Dirname(), "../../..", fmt.Sprintf("%d/day%02d-input.txt", year, day))
+	fetchers.WriteToFile(filename, body)
+
+	fmt.Println("Wrote to file: ", filename)
+
+	fmt.Println("Done!")
+}