Refactor database creation into dedicated builder module

- Extract _build_kdbx4_structure() to kdbx_parsing/builder.py
- Add KDBX3 database creation support
- Replace string params with type-safe dataclasses:
  - Argon2Config with .standard(), .high_security(), .fast() presets
  - AesKdfConfig with .standard(), .high_security() presets
  - Cipher and KdfAlgorithm StrEnums
- Add 14 new tests for KDBX3 creation and config presets

Author: coreyleavitt

pykeepass/__init__.py

@@ -8,5 +8,23 @@
 from .attachment import Attachment
 from .icons import icons
 from .version import __version__
+from .kdbx_parsing import (
+    Argon2Config,
+    AesKdfConfig,
+    Cipher,
+    KdfAlgorithm,
+)
 
-__all__ = ["__version__", "PyKeePass", "Entry", "Group", "Attachment", "icons", "create_database"]
+__all__ = [
+    "__version__",
+    "PyKeePass",
+    "Entry",
+    "Group",
+    "Attachment",
+    "icons",
+    "create_database",
+    "Argon2Config",
+    "AesKdfConfig",
+    "Cipher",
+    "KdfAlgorithm",
+]

pykeepass/kdbx_parsing/__init__.py

@@ -1,4 +1,23 @@
 from .kdbx import KDBX
 from .kdbx4 import kdf_uuids
+from .builder import (
+    build_kdbx_structure,
+    build_kdbx3_structure,
+    build_kdbx4_structure,
+    Argon2Config,
+    AesKdfConfig,
+    Cipher,
+    KdfAlgorithm,
+)
 
-__all__ = ["KDBX", "kdf_uuids"]
+__all__ = [
+    "KDBX",
+    "kdf_uuids",
+    "build_kdbx_structure",
+    "build_kdbx3_structure",
+    "build_kdbx4_structure",
+    "Argon2Config",
+    "AesKdfConfig",
+    "Cipher",
+    "KdfAlgorithm",
+]