python-installer: update to 1.0.0

python-installer: update to 1.0.0

Update package to 1.0.0. This is the first stable release.

Changes since 0.7.0:
- Dropped support for Python 3.7, 3.8, 3.9; added Python 3.13/3.14
- Added --overwrite-existing and --validate-record CLI options
- Support installing multiple wheels in a single invocation
- Security: fixed a path traversal bug
- Do not install __pycache__ directories from wheels
- Switch to stream-based validation instead of in-memory (lower memory)
- Sort entries before writing RECORD; fixed Windows relative path bug
- Complete type annotations with strict mypy enforcement
- API change: SchemeDictionaryDestination.overwrite_existing now defaults
  to True (was False); update patch 001 accordingly

Remove patch 001-don-t-raise-error-if-file-exists.patch and
set '--overwrite-existing' in build scripts.

Signed-off-by: Alexandru Ardelean <redacted>