misc: add news entries for March modules

Add detailed news entries for the following modules:
- services.skhd (macOS hotkey daemon) - Darwin-only
- services.jankyborders (macOS window borders) - Darwin-only
- programs.distrobox (container manager) - Linux-only

modules/misc/news/2025-03-21_03-19-14.nix

@@ -0,0 +1,15 @@
+{ pkgs, ... }:
+
+{
+  time = "2025-03-21T03:19:14+00:00";
+  condition = pkgs.stdenv.hostPlatform.isLinux;
+  message = ''
+    A new module is available: 'programs.distrobox'.
+
+    Distrobox is a tool that uses podman or docker to create containers using
+    the Linux distribution of your choice. It allows you to use the package
+    manager of other distributions to install applications that aren't available
+    in NixOS, and integrates those applications with your host system. The module
+    enables configuration of container definitions and distrobox settings.
+  '';
+}

modules/misc/news/2025-03-22_03-18-58.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+
+{
+  time = "2025-03-22T03:18:58+00:00";
+  condition = pkgs.stdenv.hostPlatform.isDarwin;
+  message = ''
+    A new module is available: 'services.skhd'.
+
+    Simple Hotkey Daemon (skhd) is a simple macOS hotkey daemon that allows
+    defining system-wide keyboard shortcuts for launching applications and 
+    shell commands. The module enables configuration of key combinations, modifiers,
+    and associated actions, and integrates well with window managers like yabai.
+  '';
+}

modules/misc/news/2025-03-22_03-19-06.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+
+{
+  time = "2025-03-22T03:19:06+00:00";
+  condition = pkgs.stdenv.hostPlatform.isDarwin;
+  message = ''
+    A new module is available: 'services.jankyborders'.
+
+    JankyBorders adds customizable borders to macOS application windows. It provides
+    features like adjustable border width, color, radius, and window title display.
+    This module is particularly useful for improving window visibility when using a
+    tiling window manager on macOS.
+  '';
+}