Add more issue / pr creation params (#331)

adds assignees, labels, deadline, milestone params

- [x] add flags to `tea issue create` (this is BREAKING, `-b` moved to `-d` for consistency with pr create)
- [x] add interactive mode to `tea issue create`
- [x] add flags to `tea pr create`
- [x] add interactive mode to `tea pr create`

fixes #171, fixes #303

Co-authored-by: Norwin Roosen <git@nroo.de>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/331
Reviewed-by: 6543 <6543@obermui.de>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Norwin <noerw@noreply.gitea.io>
Co-committed-by: Norwin <noerw@noreply.gitea.io>

modules/utils/utils.go

@@ -6,11 +6,15 @@ package utils
 
 // Contains checks containment
 func Contains(haystack []string, needle string) bool {
-	for _, s := range haystack {
+	return IndexOf(haystack, needle) != -1
+}
+
+// IndexOf returns the index of first occurrence of needle in haystack
+func IndexOf(haystack []string, needle string) int {
+	for i, s := range haystack {
 		if s == needle {
-			return true
+			return i
 		}
 	}
-
-	return false
+	return -1
 }