fix(node-bindings): rhel bindings are used on rhel

[botpressops]

This PR does a lot of things:

• fix rhel node-bindings require path
• add rhel 8.5 bindings
• minor changes
• support the following environment variables in each repo:
  1. NATIVE_EXTENSIONS_DIR="/my/dir" allows changing the extension directory for all packages backward compatible
  2. NODE_${PACKAGE}_DIR="/my/dir" allows changing the extension directory for a single package
  3. NODE_${PACKAGE}_BIN="/my/dir/myfile.node" allows specifying which file to load
  4. NODE_${PACKAGE}_VERBOSE=1 enables debug logs to trouble shoot an extension not loading

[CLAassistant]

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