Adds new resources (loose files, non NR pkgs, NR modules, NR Plugins)
Adds new tests
#getNodeFiles - new tests below
√ Finds nodes and icons only in nodesDir with files, icons and valid node-red packages
√ Should not find node-red node in nodesDir with files, icons and valid node-red packages
√ Should not find node-red node in nodesDir when regular package and valid node-red packages
#getModuleFiles - new tests below
√ gets a nodes module files
√ Finds only 1 node-red node in nodesDir amongst legacy nodes and regular nodes
√ Finds a node-red node in nodesDir with a sub dir containing valid node-red package
√ Finds 2 node-red node and 1 plugin in nodesDir (in root of dir)
√ Finds 2 node-red node and 1 plugin in nodesDir pointing to a node_modules dir
The exec and events components are common components that
are used by both runtime and registry. It makes sense to
move them into the util package.
This also adds some docs to the registry module