Implement Python language binding (#1192) (#1195)

Implement the first version of Python language binding

Co-authored-by: liang.he <liang.he@intel.com>

language-bindings/python/README.md

@@ -0,0 +1,31 @@
+# wamr-python
+
+## Installation
+
+### Installing from the source code
+
+Installing from local source tree is in _development mode_. The package appears to be installed but still is editable from the source tree.
+
+```bash
+$ python -m pip install -e /path/to/wamr-root/binding/python
+```
+
+## Usage
+
+```python
+import wamr.ffi as ffi
+```
+
+### Preparation
+
+The binding will load the shared library _libiwasm.so_ from the WAMR repo. So before running the binding, you need to build the library yourself.
+
+The default compile options are good enough.
+
+Please be aware that `wasm_frame_xxx` and `wasm_trap_xxx` only work well when enabling `WAMR_BUILD_DUMP_CALL_STACK`.
+
+### Examples
+
+There is a [simple example](./samples/hello_procedural.py) to show how to use bindings. Actually, the python binding follows C-APIs. There it should be easy if be familiar with _programming with wasm-c-api_.
+
+Unit test cases under _./tests_ could be another but more complete references.