HiDiffusion - License notice

Original project: https://github.com/megvii-research/HiDiffusion
Vendored from:    https://github.com/monofy-org/HiDiffusion
Vendored under:   invokeai/backend/hidiffusion/

================================================================================
CODE (Apache License 2.0)
================================================================================

The vendored HiDiffusion source code is licensed under the Apache License,
Version 2.0. The Apache 2.0 license text is available in the root LICENSE file
and at:

    https://www.apache.org/licenses/LICENSE-2.0

================================================================================
MODULE KEYS (BSD 3-Clause License)
================================================================================

The SD 1.5 and SDXL module-key lists under
invokeai/backend/hidiffusion/sd_module_key/ were sourced from dgenerate at:

    https://github.com/Teriks/dgenerate/tree/d83b839033cc22c5101fb0f987bd4eb2de3d5d12/dgenerate/extras/hidiffusion/sd_module_key

BSD 3-Clause License

Copyright (c) 2023, Teriks

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

================================================================================
LOCAL MODIFICATIONS
================================================================================

The following changes were applied when integrating HiDiffusion into InvokeAI:

* The code was vendored under the invokeai.backend.hidiffusion package.
* apply_hidiffusion() was extended to accept a torch.Generator, enabling
  deterministic image generation from a seed.
* HiDiffusion patching was integrated with InvokeAI's model loading and
  generation lifecycle.
