Add streamlink layer

Update CHANGELOG.develop

Update package location

Update package location. Package is now in melpa.

Update layers/+web-services/streamlink/packages.el

CHANGELOG.develop

@@ -483,6 +483,7 @@ In org-agenda-mode
 - eww (thanks to Colton Kopsa, Maximilian Wolff and Daniel Nicolai)
 - lobsters
 - hackernews
+- streamlink
 *** Renamed layers
 - =extra-langs= renamed to =major-modes= (thanks to Eivind Fonn)
 - =pdf-tools= renamed to =pdf=

layers/+web-services/streamlink/README.org

@@ -0,0 +1,26 @@
+#+TITLE: streamlink layer
+
+#+TAGS: layer|web service
+
+* Table of Contents                                       :TOC_4_gh:noexport:
+- [[#description][Description]]
+  - [[#features][Features:]]
+- [[#install][Install]]
+- [[#key-bindings][Key bindings]]
+
+* Description
+This layer adds support for opening URLs in streamlink. 
+
+** Features:
+  - Open URL with streamlink
+
+* Install
+To use this configuration layer, add it to your =~/.spacemacs=. You will need to
+add =streamlink= to the existing =dotspacemacs-configuration-layers= list in this
+file.
+
+* Key bindings
+
+| Key Binding   | Description              |
+|---------------+--------------------------|
+| ~SPC a w s o~ | Open URL with streamlink |

layers/+web-services/streamlink/packages.el

@@ -0,0 +1,34 @@
+;;; packages.el --- streamlink layer packages file for Spacemacs.
+;;
+;; Copyright (c) 2021 Sylvain Benner & Contributors
+;;
+;; Author: Benedikt Broich <b.broich@posteo.de>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(defconst streamlink-packages
+  '(streamlink))
+
+(defun streamlink/init-streamlink ()
+  (use-package streamlink
+    :defer t
+    :init (progn
+            (spacemacs/declare-prefix "aws" "stream")
+            (spacemacs/set-leader-keys
+              "awso" 'streamlink-open-url))))