Update tests/test_camera.py, tests/test_comicray.py, tests/test_io.py,...

Update tests/test_camera.py, tests/test_comicray.py, tests/test_io.py, tests/test_main.py, tests/test_optics.py, tests/test_target.py

tests/test_camera.py

 import unittest
-from CpicImgSim.camera import EMCCD
+from csst_cpic_sim.camera import EMCCD
 import numpy as np
 
 

tests/test_comicray.py

 import unittest
-from CpicImgSim.camera import CosmicRayFrameMaker, sky_frame_maker
-from CpicImgSim.target import star_photlam
-from CpicImgSim.optics import filter_throughput
+from csst_cpic_sim.camera import CosmicRayFrameMaker, sky_frame_maker
+from csst_cpic_sim.target import star_photlam
+from csst_cpic_sim.optics import filter_throughput
 import numpy as np
 
 

tests/test_io.py

 import unittest
 from unittest import mock
-from CpicImgSim.io import obsid_parser, primary_hdu, frame_header, save_fits_simple
-import CpicImgSim.io as io
+from csst_cpic_sim.io import obsid_parser, primary_hdu, frame_header, save_fits_simple
+import csst_cpic_sim.io as io
 from astropy.io import fits
 import numpy as np
 import yaml

tests/test_main.py

 import unittest
-from CpicImgSim import observation_simulation, quick_run
+from csst_cpic_sim import observation_simulation, quick_run
 
 
 class TestMain(unittest.TestCase):

tests/test_optics.py

 import unittest
-from CpicImgSim.target import star_photlam
-from CpicImgSim.optics import make_focus_image, focal_mask, filter_throughput
-from CpicImgSim.config import which_focalplane, S
+from csst_cpic_sim.target import star_photlam
+from csst_cpic_sim.optics import make_focus_image, focal_mask, filter_throughput
+from csst_cpic_sim.config import which_focalplane, S
 import numpy as np
 
 

tests/test_target.py

 import unittest
-from CpicImgSim.target import _sptype2num, hybrid_albedo_spectrum, star_photlam, spectrum_generator, planet_contrast, extract_target_x_y
-from CpicImgSim.config import S
+from csst_cpic_sim.target import _sptype2num, hybrid_albedo_spectrum, star_photlam, spectrum_generator, planet_contrast, extract_target_x_y
+from csst_cpic_sim.config import S
 from math import pi