Refactor: update module import paths and version bump

- Changed import path from `h3result.cffi` to `h3result._cffi` in
`build_ext.py`, `error.py`, `h3result.py`, and `read_h3result.py`.
- Added import of `_cffi_backend` in `__init__.py` to ensure compatibility
with PyInstaller.
- Updated `cffi` dependency version in `pyproject.toml` to "^1.17".
- Bumped package version to "1.0.2" in `pyproject.toml`.

These changes were made to resolve potential import issues and ensure the
package is up-to-date with dependency requirements. Import path adjustments
improve modular access and compatibility, while the version change indicates
enhancements without breaking changes.

h3result-py/build_ext.py

@@ -49,7 +49,7 @@ def build_and_install(root: Path, prefix: str, prj_dir: str, git_url: str):
 
     ffibuilder.cdef(open(PKG / "interface.h", "r").read())
     ffibuilder.set_source(
-        "h3result.cffi",
+        "h3result._cffi",
         """
         #include "h3r_result.h"
         """,

h3result-py/h3result/__init__.py

@@ -0,0 +1,2 @@
+# Let PyInstaller and others know that we need cffi_backend.
+import _cffi_backend  # noqa: F401

h3result-py/h3result/error.py

@@ -1,4 +1,4 @@
-from h3result.cffi import ffi, lib
+from h3result._cffi import ffi, lib
 
 __all__ = ["H3ResultError"]
 

h3result-py/h3result/h3result.py

@@ -1,6 +1,6 @@
 import os
 
-from h3result.cffi import ffi, lib
+from h3result._cffi import ffi, lib
 from h3result.error import H3ResultError
 
 __all__ = ["H3Result"]

h3result-py/h3result/read_h3result.py

@@ -1,7 +1,7 @@
 import os
 from pathlib import Path
 
-from h3result.cffi import ffi
+from h3result._cffi import ffi
 from h3result.h3result import H3Result
 from h3result.path_like import PathLike
 

h3result-py/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "h3result"
-version = "1.0.1"
+version = "1.0.2"
 description = "Python wrapper for h3result library."
 authors = ["Danilo Horta <[email protected]>"]
 license = "MIT"
@@ -14,7 +14,7 @@ include = [
 ]
 
 [tool.poetry.dependencies]
-cffi = "^1.16"
+cffi = "^1.17"
 python = "^3.9"
 
 [tool.poetry.build]