nodejs bindings (#602)

* chore: boilerplate, refactor in future

* chore: boilerplate

* feat: can compile succesfully

* document .gyp file

* add src, test and fix gyp

* progress on prompting and some helper methods

* add destructor and basic prompting work, prepare download function

* download function done

* download function edits and adding documentation

* fix bindings memory issue and add tests and specs

* add more documentation and readme

* add npmignore

* Update README.md

Signed-off-by: Jacob Nguyen <76754747+jacoobes@users.noreply.github.com>

* Update package.json - redundant scripts

Signed-off-by: Jacob Nguyen <76754747+jacoobes@users.noreply.github.com>

---------

Signed-off-by: Jacob Nguyen <76754747+jacoobes@users.noreply.github.com>

gpt4all-bindings/typescript/stdcapture.h

@@ -0,0 +1,21 @@
+//https://stackoverflow.com/questions/5419356/redirect-stdout-stderr-to-a-string
+#ifndef COUTREDIRECT_H
+#define COUTREDIRECT_H
+
+#include <iostream>
+#include <streambuf>
+#include <string>
+#include <sstream>
+
+class CoutRedirect {
+public:
+    CoutRedirect();
+    std::string getString();
+    ~CoutRedirect();
+
+private:
+    std::stringstream buffer;
+    std::streambuf* old;
+};
+
+#endif  // COUTREDIRECT_H