[llvm] [llvm-ir2vec] Adding initEmbedding API to ir2vec python bindings (PR #177092)

[Nishant Sachdeva via llvm-commits]

================
@@ -1,4 +1,4 @@
-find_package(Python COMPONENTS Interpreter Development.Module REQUIRED)
+find_package(Python ${Python3_VERSION} EXACT COMPONENTS Interpreter Development.Module REQUIRED)
----------------
nishant-sachdeva wrote:

Even so, based on this MLIR file, I've refined the python check to 

```
set(BINDINGS_MINIMUM_PYTHON_VERSION 3.10)
find_package(Python ${BINDINGS_MINIMUM_PYTHON_VERSION} EXACT COMPONENTS Interpreter Development.Module REQUIRED)
```

https://github.com/llvm/llvm-project/pull/177092