The Python language-binding needs python>=3.9 (#2228)

Update python language binding setup.py and document
Make compile.sh executable: `chmod +x compile.sh`

language-bindings/python/README.md

@@ -4,6 +4,8 @@ The WAMR Python package contains a set of high-level bindings for WAMR API and W
 
 ## Installation
 
+* **Notice**: This python package need python >= `3.9`.
+
 To Install from local source tree in _development mode_ run the following command,
 
 ```bash

language-bindings/python/setup.py

@@ -62,4 +62,5 @@ setup(
         'install': PreInstallCommand,
         'egg_info': PreEggInfoCommand,
     },
+    python_requires='>=3.9'
 )

language-bindings/python/wamr-api/README.md

@@ -1,5 +1,7 @@
 # WARM API
 
+* **Notice**: The python package `wamr.wamrapi.wamr` need python >= `3.9`.
+
 ## Setup
 
 ### Pre-requisites