Create polygon.py

[AbdullahKazi500]

Issue #, if available:
FIXES #969
Description of changes:
ArbitraryPolygonCanvas
Provides support for canvases defined by arbitrary polygons, allowing more flexibility in defining the spatial constraints for atom arrangements.
Methods:
init(self, vertices: List[Tuple[float, float]]): Initializes the canvas with a list of vertices defining the polygon.
is_within(self, point: Tuple[float, float]) -> bool: Checks if a given point is within the polygon.

Class Methods Update:
from_decorated_bravais_lattice:
Updated to accept a canvas parameter that can be either a RectangularCanvas or an ArbitraryPolygonCanvas.
Functionality:
Uses lattice vectors and decoration points to generate atom arrangements within the given canvas.
For ArbitraryPolygonCanvas, it utilizes the polygon bounds and is_within method to ensure points are within the arbitrary polygon.
from_honeycomb_lattice:
Updated to accept a canvas parameter that can be either a RectangularCanvas or an ArbitraryPolygonCanvas.
Functionality: Uses specific lattice vectors and decoration points for a honeycomb lattice structure within the given canvas.
from_bravais_lattice:
Updated to accept a canvas parameter that can be either a RectangularCanvas or an ArbitraryPolygonCanvas.
Functionality: Uses provided lattice vectors to generate atom arrangements within the given canvas.

Example Initialization:
Provided example usage for both RectangularCanvas and ArbitraryPolygonCanvas with the AtomArrangement class.
Demonstrates how to create an AtomArrangement using a honeycomb lattice within an arbitrary polygon canvas.
Validation:
Prints the number of atoms arranged within the defined canvas to validate functionality.
Testing done:
no

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[peterkomar-aws]

Please consolidate the work to this PR: #989