tools/vterm: improve UI/UX

- Don't prompt about processes when killing buffer
- Hide modeline in vterm buffers (doesn't do anything useful and would
  be consistent with settings for eshell and term modules).
- Refactor +vterm/open & +vterm/open-popup
- Add Emacs window redraw hack to force vterm to redraw, fixing
  artefacting in some edge cases.
- Fix ansi-color-names-vector when solaire-mode is present, otherwise
  you get a mismatched background in vterm (and other terms).

modules/tools/vterm/autoload.el

@@ -7,11 +7,15 @@ non-nil, cd into the current project's root."
   (interactive "P")
   (unless (fboundp 'module-load)
     (user-error "Your build of Emacs lacks dynamic modules support and cannot load vterm"))
+  ;; This hack forces vterm to redraw, fixing strange artefacting in the tty.
+  ;; Don't ask me why it works.
+  (save-window-excursion
+    (pop-to-buffer "*scratch*"))
   (let ((default-directory
           (if arg
               (or (doom-project-root) default-directory)
             default-directory)))
-    (switch-to-buffer (save-window-excursion (vterm)))))
+    (vterm)))
 
 ;;;###autoload
 (defun +vterm/open-popup (arg)
@@ -24,7 +28,7 @@ non-nil, cd into the current project's root."
           (if arg
               (or (doom-project-root) default-directory)
             default-directory)))
-    (pop-to-buffer (save-window-excursion (vterm)))))
+    (vterm-other-window)))
 
 ;;;###autoload
 (defun +vterm/open-popup-in-project ()