Because the api-key was saved to the elisp cache without quotes, the key
was read like a variable symbol. This is why we can't have nice things.
Reported by @freddian
+ +wakatime/setup prompts for API key, after asking if you want to open a
browser to the wakatime api-key page.
+ wakatime-api-key is saved to a cache file in doom-cache-dir.
+ Fixed wakatime not starting on the first buffer when passing a file to
Emacs directly.
Suggested by @freddian
