config: update org-mode, UI settings, and add EMMS media player

- Add EMMS music player configuration with mpv support
- Refine org-mode with preload, new capture templates, and agenda setup
- Update keybindings for windows, ibuffer, and org-store-link
- Improve line number display settings

custom.el

@@ -9,6 +9,9 @@
      "7fea145741b3ca719ae45e6533ad1f49b2a43bf199d9afaee5b6135fd9e6f9b8"
      "2b0fcc7cc9be4c09ec5c75405260a85e41691abb1ee28d29fcd5521e4fca575b"
      default))
+ '(org-agenda-files
+   '("d:/emacs/org/learning-org-mode.org"
+     "d:/emacs/hugo/this-is-my-blog/all-blog.org"))
  '(package-selected-packages
    '(ace-window benchmark-init cape cnfonts corfu crux drag-stuff eglot
 		embark-consult everything exec-path-form-shell gcmh