Rename remove_repeat and add tests

[fzimmermann89]

Renames to reduce_repeat (to match reduce_view), adds a dimension argument, and adds some tests.

[fzimmermann89]

Stack from ghstack (oldest at bottom):

• IHeader #591
• -> Rename remove_repeat and add tests #678
• Refactor AcqInfo and Trajectory Calculation #560
• Add unsqeeze_at #656
• Make Rotation einops compatible #655

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/mrpro
_version.py	6	2	67%	7–8
src/mrpro/algorithms/csm
inati.py	24	1	96%	44
walsh.py	16	1	94%	53
src/mrpro/algorithms/dcf
dcf_voronoi.py	55	4	93%	15, 55–56, 89
src/mrpro/algorithms/optimizers
adam.py	20	1	95%	101
pdhg.py	79	3	96%	177–178, 184
src/mrpro/algorithms/reconstruction
DirectReconstruction.py	28	16	43%	59–79, 93
IterativeSENSEReconstruction.py	13	1	92%	79
Reconstruction.py	50	22	56%	42, 54–56, 80–87, 108–117
RegularizedIterativeSENSEReconstruction.py	41	17	59%	97–101, 115–140
src/mrpro/data
AcqInfo.py	135	3	98%	39, 47, 217
CsmData.py	29	3	90%	15, 84–86
DcfData.py	45	8	82%	18, 66, 78–83
EncodingLimits.py	73	3	96%	33, 123, 126
IData.py	59	8	86%	118, 132, 159–167
IHeader.py	133	12	91%	69–71, 256, 260, 264, 268, 302–306
KData.py	221	31	86%	113–114, 129, 136, 148–161, 170, 178, 187, 221, 243–245, 281–282, 337–348, 509, 511, 571, 586, 650, 659
KHeader.py	141	21	85%	24, 109–115, 142, 190, 197–198, 201, 208, 225–232, 240–251
KNoise.py	31	15	52%	39–52, 56–61
KTrajectory.py	81	5	94%	207–211
MoveDataMixin.py	140	18	87%	28, 126, 142, 156–158, 220, 336–338, 351, 430, 450–451, 453, 468–469, 471
QData.py	39	7	82%	42, 65–73
Rotation.py	719	43	94%	101, 199, 336, 434, 478, 496, 583, 585, 594, 628, 630, 693, 770, 775, 778, 793, 810, 815, 891, 1079, 1084, 1087, 1111, 1115, 1243, 1245, 1253–1254, 1318, 1400, 1703, 1855, 1890, 1894, 2046, 2084, 2092, 2096, 2100–2104
SpatialDimension.py	232	21	91%	34, 104, 141, 148, 154, 274–276, 289–291, 325, 343, 356, 369, 382, 395, 404–405, 420, 429
acq_filters.py	12	1	92%	47
src/mrpro/data/traj_calculators
KTrajectoryCalculator.py	27	1	96%	82
KTrajectoryIsmrmrd.py	27	8	70%	55–61, 66
src/mrpro/operators
CartesianSamplingOp.py	89	3	97%	118, 157, 280
ConstraintsOp.py	60	2	97%	46, 48
EndomorphOperator.py	32	2	94%	52, 58
FiniteDifferenceOp.py	27	2	93%	40, 105
FourierOp.py	73	2	97%	234, 239
Functional.py	77	9	88%	20–22, 117, 119, 226–228, 242
GridSamplingOp.py	136	9	93%	72–73, 82–83, 90–91, 94, 96, 98
LinearOperator.py	200	10	95%	48, 107, 217, 244, 251, 292, 301, 309, 326, 361
LinearOperatorMatrix.py	162	19	88%	82, 119, 152, 161, 166, 175–178, 191–194, 202–203, 208–209, 221, 310, 337, 364
MultiIdentityOp.py	13	2	85%	43, 48
NonUniformFastFourierOp.py	177	10	94%	69, 96, 206, 208, 241, 243, 302, 356, 406, 411
Operator.py	79	2	97%	32, 88
ProximableFunctionalSeparableSum.py	39	3	92%	50, 103, 110
SliceProjectionOp.py	174	8	95%	45, 62, 64, 70, 206, 227, 260, 300
WaveletOp.py	119	5	96%	151, 169, 204, 209, 232
ZeroPadOp.py	16	1	94%	30
src/mrpro/utils
filters.py	62	2	97%	44, 49
reshape.py	91	1	99%	289
slice_profiles.py	47	6	87%	21, 37, 116–119, 152
sliding_window.py	34	1	97%	34
split_idx.py	10	2	80%	43, 47
summarize_tensorvalues.py	12	9	25%	22–31
typing.py	69	55	20%	9–235
unit_conversion.py	60	14	77%	32, 40, 42, 49, 51, 58, 60, 69, 80, 82, 101, 103, 124, 126
zero_pad_or_crop.py	31	6	81%	26, 30, 55, 58, 61, 64
TOTAL	5303	461	91%

Tests	Skipped	Failures	Errors	Time
2438	0 💤	0 ❌	0 🔥	1m 10s ⏱️

[fzimmermann89]

I f'ed up, ignore this PR.

[github-actions]

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