Make this repository a authenticated Guix channel

In order to ease distribution of the various machine configurations defined within this
repository, make this repository an authenticated Guix channel.

* .guix-authorizations: Add a single authorized key to start
* .guix-channel: Set various channel details
* news.txt: Provide an initial news item

.guix-authorizations

@@ -0,0 +1,11 @@
+;; -*- mode: scheme; -*-
+
+;; This is the list of OpenPGP keys currently authorized to sign commits in
+;; this repository.
+
+(authorizations
+ (version 0)
+
+ ((;; primary: "F7BD DC6D BBE6 B16B 2C71  1A02 5FAB 9938 E05B FEC8"
+   "F8D5 46F3 AF37 EF53 D1B6  48BE 7B4D EB93 212B 3022"
+   (name "rekahsoft"))))

.guix-channel

@@ -0,0 +1,7 @@
+;; -*- mode: scheme; -*-
+
+(channel
+ (version 0)
+ (directory ".guix")
+ (news-file "news.txt")
+ (url "https://git.rekahsoft.ca/rekahsoft/guix-north-america.git"))

news.txt

@@ -0,0 +1,2 @@
+(channel-news
+ (version 0))