Add basic class along with exception and attach

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

src/bindings/main.cpp

@@ -0,0 +1,44 @@
+#include <pybind11/pybind11.h>
+#define STRINGIFY(x) #x
+#define MACRO_STRINGIFY(x) STRINGIFY(x)
+
+extern "C" {
+#include "libbpf.h"
+}
+#include "core/bpf_program.h"
+#include "core/bpf_exception.h"
+
+namespace py = pybind11;
+
+PYBIND11_MODULE(pylibbpf, m) {
+    m.doc() = R"pbdoc(
+        Pylibbpf - libbpf bindings for Python
+        -----------------------
+
+        .. currentmodule:: pylibbpf
+
+        .. autosummary::
+           :toctree: _generate
+
+           BpfProgram
+           BpfException
+    )pbdoc";
+
+    // Register the custom exception
+    py::register_exception<BpfException>(m, "BpfException");
+
+    py::class_<BpfProgram>(m, "BpfProgram")
+     .def(py::init<const std::string&>())
+     .def(py::init<const std::string&, const std::string&>())
+     .def("load", &BpfProgram::load)
+     .def("attach", &BpfProgram::attach)
+     // .def("detach", &BpfProgram::detach)
+     .def("is_loaded", &BpfProgram::is_loaded)
+     .def("is_attached", &BpfProgram::is_attached);
+
+#ifdef VERSION_INFO
+    m.attr("__version__") = MACRO_STRINGIFY(VERSION_INFO);
+#else
+    m.attr("__version__") = "dev";
+#endif
+}