Add WAMR API bindings in Python (#1959)

Before adding the new bindings:
1. Moved wasm-c-api in a subfolder wasmcapi in the package.
2. Adapted the tests to be able to run in this new structure.

New:
1. Added the WAMR API in another folder wamrapi in the same level as wasm-c-api.
2. Created an OOP proposal.
3. Added an example using this proposal.

language-bindings/python/setup.py

@@ -8,7 +8,28 @@
 # pylint: disable=missing-function-docstring
 # pylint: disable=missing-module-docstring
 
-from setuptools import setup, find_packages
+import pathlib
+from setuptools import setup
+from setuptools.command.develop import develop
+from setuptools.command.install import install
+from subprocess import check_call
+
+
+def build_library():
+    cur_path = pathlib.Path(__file__).parent
+    check_call(f"{cur_path}/utils/create_lib.sh".split())
+
+class PreDevelopCommand(develop):
+    """Pre-installation for development mode."""
+    def run(self):
+        build_library()
+        develop.run(self)
+
+class PreInstallCommand(install):
+    """Pre-installation for installation mode."""
+    def run(self):
+        build_library()
+        install.run(self)
 
 
 with open("README.md") as f:
@@ -24,7 +45,11 @@ setup(
     long_description=readme,
     author="The WAMR Project Developers",
     author_email="hello@bytecodealliance.org",
-    url="https://github.com/bytecodealliance/wamr-python",
+    url="https://github.com/bytecodealliance/wasm-micro-runtime",
     license=license,
-    packages=["wamr"],
+    include_package_data=True,
+    cmdclass={
+        'develop': PreDevelopCommand,
+        'install': PreInstallCommand,
+    },
 )