Requirements documentation

[eric-ott]

• Only runs on java 17, link to download Java
  -link to Gradle

##Problem

• It says to run on Java 17+, so I downloaded the newest version of java, thinking that would be the best and found out that it does not run on the newest version of Java, only Java 17 after getting developers to help me with the code

##Fixes

• Added a comment that it only runs on Java 17, so people know to switch to Java 17 if they have a newer version
• Added links to where to download the files for Java and Gradle, so they can click it and get it quickly if they do not have it (idea from Bill)

##Additional ideas

• We had increased trouble with setting up the node through VS Code, and was advised by the developers to use IntelliJ, which is not a requirement, but it makes it much easier to use. So maybe add a comment about using that to run the node to get the localhost running.