**Is your feature request related to a problem? Please describe.** I would like to check the length of receiver variable names. **Describe the solution you'd like** Add the receiver variable name length check to the `receiver-naming` rule. **Describe alternatives you've considered** I created a [linter](https://github.com/ytnsym/receivernamelen), but it seemed like it would be better to improve the `receiver-naming` rule. **Additional context** https://github.com/golangci/golangci-lint/pull/5007#issuecomment-2350457699