feat(compiler): Python bindings (#53)

- feat(compiler): python bindings
- build: update docker image for python bindings
- pin pybind11 to 2.6.2, 2.7 is not having correct include_dirs set (still
a question why?)
- using generated parser/printer

compiler/python/ZamalangModule.cpp

@@ -0,0 +1,35 @@
+#include "DialectModules.h"
+
+#include "mlir-c/Bindings/Python/Interop.h"
+#include "mlir-c/Registration.h"
+#include "mlir/Bindings/Python/PybindAdaptors.h"
+#include "zamalang-c/Dialect/HLFHE.h"
+
+#include "llvm-c/ErrorHandling.h"
+#include "llvm/Support/Signals.h"
+
+#include <pybind11/pybind11.h>
+namespace py = pybind11;
+
+PYBIND11_MODULE(_zamalang, m) {
+  m.doc() = "Zamalang Python Native Extension";
+  llvm::sys::PrintStackTraceOnErrorSignal(/*argv=*/"");
+  LLVMEnablePrettyStackTrace();
+
+  m.def(
+      "register_dialects",
+      [](py::object capsule) {
+        // Get the MlirContext capsule from PyMlirContext capsule.
+        auto wrappedCapsule = capsule.attr(MLIR_PYTHON_CAPI_PTR_ATTR);
+        MlirContext context = mlirPythonCapsuleToContext(wrappedCapsule.ptr());
+
+        // Collect Zamalang dialects to register.
+        MlirDialectHandle hlfhe = mlirGetDialectHandle__hlfhe__();
+        mlirDialectHandleRegisterDialect(hlfhe, context);
+        mlirDialectHandleLoadDialect(hlfhe, context);
+      },
+      "Register Zamalang dialects on a PyMlirContext.");
+
+  py::module hlfhe = m.def_submodule("_hlfhe", "HLFHE API");
+  zamalang::python::populateDialectHLFHESubmodule(hlfhe);
+}