feat(build): add autoreconf dependency check

[epiccurious]

Add check for autoreconf dependency to autogen.sh and refactor -if to long forms of optional arguments.

Impact

• Add a functional change to improves error handling to provide a more helpful message if autoreconf is not found.
• Add a non-functional refactor to change the autoreconf optional arguments from -if to --install --force.
• These changes align with the format of autogen.sh on the bitcoin repo

Background

10 years ago: Created the entire file with no other updates.

• Link to commit