(chore) Reference ConfigEntry consistently

[WebSpider]

This renames references to ConfigEntry from config to entry:

• config is already used in relation to configurations of various climate entries
• The naming was inconsistent, sometimes config, sometimes entry

Found this while working on #447 and it annoyed me 😁

[prvakt]

question - is it not better to use config_entry instead entry/config ? It's unlikely to clash with other variables in future since it’s specific and from name its already clear that this object represents a ConfigEntry

[WebSpider]

I chose entry because its in the HA example docs for integration development, but if we think config_entry is better, sure 👍

[prvakt]

I chose entry because its in the HA example docs for integration development, but if we think config_entry is better, sure 👍

I don't have a preference, so I'll leave the decision up to you :)