* Add CIDR input support
- Add expandCIDRInputValue function which accepts the cidr,
and stores the IPs into hmap. It uses mapcidr to get the expanded IPs
- Add test case to test expandCIDRInputValue and isCIDR function
- Update dsl_test.go which had typo. coz of failing test
* Resolve the requested changes
* Replacing hasstdin with helper library
* adding timeout reader on stdin
* adding large input read timeout
* reducing stdin timeout + nostdin flag
* go mod update
* readme update
* go mod tidy
Co-authored-by: sandeep <sandeep@projectdiscovery.io>
