chore(version): v19.4.0

[janickm]

This pull request updates the project version to 19.4.0 and introduces several significant features and fixes, most notably the addition of a first-class IdealPinholeCameraModel and rectification tools for camera models, enhancements to motion compensation, and improvements in lidar model estimation robustness. The release notes in CHANGELOG.md have been updated to reflect these changes.

Major Features and Additions:

• Added IdealPinholeCameraModel and associated Rectificator for straightforward transformation of distorted camera images to rectified ones, fully integrated into the sensor stack and visualization tools. ([CHANGELOG.mdR13-R38](https://github.com/NVIDIA/ncore/pull/153/files#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR13-R38))
• Enhanced MotionCompensator to support configurable anchor frames and reference timestamps, enabling more flexible and accurate motion compensation. ([CHANGELOG.mdR13-R38](https://github.com/NVIDIA/ncore/pull/153/files#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR13-R38))

Improvements and Fixes:

• Improved robustness of nuScenes lidar model estimation to handle all edge cases and scenes. ([CHANGELOG.mdR13-R38](https://github.com/NVIDIA/ncore/pull/153/files#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR13-R38))
• Fixed issues with downstream inclusion in lidar model evaluation, ITAR store writer reload, and updated nuscenes data converter alias. ([CHANGELOG.mdR13-R38](https://github.com/NVIDIA/ncore/pull/153/files#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR13-R38))

Project Versioning:

• Updated the embedded build label to 19.4.0 in .bazelrc. ([.bazelrcL43-R43](https://github.com/NVIDIA/ncore/pull/153/files#diff-544556920c45b42cbfe40159b082ce8af6bd929e492d076769226265f215832fL43-R43))
• Added a comprehensive changelog entry for version 19.4.0 in CHANGELOG.md. ([CHANGELOG.mdR13-R38](https://github.com/NVIDIA/ncore/pull/153/files#diff-06572a96a58dc510037d5efa622f9bec8519bc1beab13c9f251e97e657a9d4edR13-R38))