Move satellite propagation to celery; change response format; refactor to using util files

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
api/core
propagation_strategies.py	149	129	13%	81–186, 232–256, 317–417, 444–451, 454
routes.py	179	70	61%	42, 81, 126–132, 139–141, 205–206, 227, 304, 325, 389–390, 411, 488–489, 510, 571–572, 591, 664–665, 684, 705–726, 748–773, 812–861
tasks.py	146	108	26%	46–150, 159–252, 283–302, 358–361, 381–384, 405–408, 428–431
utils.py	186	117	37%	38, 64–71, 74–81, 105–116, 160–172, 203–234, 285–350, 395, 402–403, 463–464, 478–479, 488, 543–646, 679–680
api/core/database
models.py	43	12	72%	23–25, 28, 54–60, 63
satellite_access.py	32	23	28%	11–21, 25–32, 37–68
tle_access.py	56	23	59%	27–50, 71–89, 128, 140, 151–152, 159–161
api/utils
coordinate_systems.py	36	28	22%	23–34, 54–69, 85–97, 116–130, 152–173
time_utils.py	21	18	14%	18–48, 66–92
tests
conftest.py	15	1	93%	30
test_endpoints.py	149	96	36%	20–24, 35–39, 49–53, 64–68, 82–86, 100–104, 115–127, 138–150, 161–173, 184–196, 209–222, 236–249, 268–312, 318–388
test_errors.py	25	8	68%	5, 8, 17, 19, 28, 30, 42, 44
TOTAL	1328	633	52%

Tests	Skipped	Failures	Errors	Time
25	0 :zzz:	12 :x:	0 :fire:	4m 25s :stopwatch: