public static URL makeURL(ProjectLocator projectLocator) {
		return makeURL(projectLocator, null, null);
	}
Create a URL which refers to a local Ghidra project
@param projectLocator absolute project location 
@return local Ghidra project URL
@throws IllegalArgumentException if {@code projectLocator} does not have an absolute location
Ghidra/Framework/Project/src/main/java/ghidra/framework/protocol/ghidra/GhidraURL.java