evil-commands.el: require seq, tab-bar and subr-x libs

Fixes warnings like:

    evil-commands.el:5205:1:Error: the following functions are not known to be defined: string-trim-right, tab-bar-close-tab, tab-close, tab-bar-select-tab, tab-bar-switch-to-next-tab

evil-commands.el

@@ -36,6 +36,12 @@
 (require 'evil-vars)
 (require 'cl-lib)
 (require 'reveal)
+(require 'seq)
+(require 'tab-bar)
+
+;; older Emacses had some core functions declared in subr-x.
+(when (< emacs-major-version 29)
+  (require 'subr-x))
 
 (declare-function imenu--in-alist "imenu")