* chore(lib): reduce import overhead
This PR should reduce the import time overhead caused by manim imports. To solve this, manim is only imported when Slide or ThreeDSlide is needed. A custom logger is now defined, which copies the one from Manim Community. FFMPEG_BIN is now hardcoded, but should be configurable in the future via the CLI or some config file.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* fix(lib): remove last .manim import
* fix(lib): remove print
* chore(lib): fix typo
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>