add basic confim util

src/hwylterm.nim

@@ -10,5 +10,5 @@
 
 ]##
 
-import hwylterm/[spin, bbansi]
+import hwylterm/[spin, bbansi, confirm]
-export spin, bbansi
+export spin, bbansi, confirm

src/hwylterm/confirm.nim

@@ -0,0 +1,21 @@
+import std/[strutils]
+import ./bbansi
+
+proc confirm*(
+  question: string,
+  prefix = "",
+  suffix = ""
+): bool =
+  result = false
+  stderr.write $(question & bb"[yellow] (Y/n) ")
+  while true:
+    let ans = readLine(stdin)
+    case ans.strip().toLowerAscii():
+    of "y","yes": return true
+    of "n","no": return false
+    else:
+      stderr.write($bb("[red]Please answer Yes/no\nexpected one of [b]Y,yes,N,no "))
+  stderr.write "\n"
+
+when isMainModule:
+  echo "Response: ", confirm("Is it working?")