Golang bindings initial working version(#534)

* WIP

* Fix includes

* Try to fix linking issues

* Refinements

* allow to load MPT and llama models too

* cleanup, add example, add README

gpt4all-bindings/golang/gpt4all_test.go

@@ -0,0 +1,27 @@
+package gpt4all_test
+
+import (
+	. "github.com/nomic-ai/gpt4all/gpt4all-bindings/golang"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("LLama binding", func() {
+	Context("Declaration", func() {
+		It("fails with no model", func() {
+			model, err := New("not-existing")
+			Expect(err).To(HaveOccurred())
+			Expect(model).To(BeNil())
+		})
+		It("fails with no model", func() {
+			model, err := New("not-existing", SetModelType(MPTType))
+			Expect(err).To(HaveOccurred())
+			Expect(model).To(BeNil())
+		})
+		It("fails with no model", func() {
+			model, err := New("not-existing", SetModelType(LLaMAType))
+			Expect(err).To(HaveOccurred())
+			Expect(model).To(BeNil())
+		})
+	})
+})