feat(wpcarro/emacs): Prefer Vim style of word-searching

In my opinion the following versions of compound words should be searched
similarly...

- `testingThisOut`   (camel case)
- `TestingThisOut`   (class case)
- `testing_this_out` (snake case)
- `testing-this-out` (kebab case)

...but Emacs's default searching treats the snake and kebab cases differently,
which makes it difficult to search for buffer-local occurrences of symbols in
Python, Elisp (among other languages).

This has been bothering me for some time. I must've attempted to fix this awhile
ago by using `setq` (when I should've used `customize-set-variable`, which makes
me wonder: how much of my configuration is flaky because I'm using `setq` where
I should be using `customize-set-variable`?

For more context about this change, see `describe-variable` for
`evil-symbol-word-search`.

Change-Id: Ie03f0da119f59e04abc5de3143aa6edaf6115168
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4804
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>

users/wpcarro/emacs/.emacs.d/wpc/keybindings.el

@@ -102,7 +102,7 @@
 (general-unbind 'normal "s"   "M-." "C-p" "C-n")
 (general-unbind 'insert "C-v" "C-d" "C-a" "C-e" "C-n" "C-p" "C-k")
 
-(setq evil-symbol-word-search t)
+(customize-set-variable 'evil-symbol-word-search t)
 (evil-mode 1)
 (evil-collection-init)
 (evil-commentary-mode)