remove robocrys from component __init__.py (#376)

* remove robocrys from component __init__.py

this causes errors when import ctc.component because robocrys is an optional dependency

* move robocrys component to apps/main.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

crystal_toolkit/components/__init__.py

@@ -17,7 +17,6 @@
     PhononBandstructureAndDosPanelComponent,
 )
 from crystal_toolkit.components.pourbaix import PourbaixDiagramComponent
-from crystal_toolkit.components.robocrys import RobocrysComponent
 from crystal_toolkit.components.search import SearchComponent
 from crystal_toolkit.components.structure import StructureMoleculeComponent