Configuration generator

Create a command-line tool that asks a few questions and spits out the following configuration files:

• JSON repository configuration file
• Infinispan configuration file
• JGroups configuration file

The resulting files are almost certainly not usable as-is, but they have the important structure and placeholders for values. Parameters to the tool include:

• Repository name
• JNDI name (if any)
• Workspace names (defaults to "default" only)
• Clustered? If yes, then replicated vs distributed
• Eviction? If so, timeout
• Content storage (list the available choices, or allow entering a custom class name; output would include parameters for some well-known cache stores like JDBC)
• Shared storage (only if REPL or DIST)?
• Write behind (not sure if we should support this, especially if we have a fast-enough cache store)
• Binary storage (local FS, JDBC, Cassandra, MongoDB, ISPN; for ISPN whether shared)

The generated files would contain comments (see MODE-2082) for other areas, like sequencers, external sources, node types, query indexes, etc.