refactor!: shorten parameter enum and related type names

[msmk0]

This renames the following types

BoundParametersIndices -> BoundIndices
BoundParametersScalar -> BoundScalar
eBoundParametersSize -> eBoundSize
FreeParametersIndices -> FreeIndices
FreeParametersScalar -> FreeScalar
eFreeParametersSize -> eFreeSize

and replace the following previously deprecated typedefs with the correct types

ParDef -> BoundIndices
ParID_t -> BoundIndices
ParValue_t -> BoundScalar

Fixes #137 and fixes #407.

[codecov]

Codecov Report

Merging #420 into master will increase coverage by 0.03%.
The diff coverage is 39.13%.

@@            Coverage Diff             @@
##           master     #420      +/-   ##
==========================================
+ Coverage   49.22%   49.26%   +0.03%     
==========================================
  Files         326      326              
  Lines       16083    16090       +7     
  Branches     7420     7418       -2     
==========================================
+ Hits         7917     7926       +9     
  Misses       2931     2931              
+ Partials     5235     5233       -2     

Impacted Files	Coverage Δ
Core/include/Acts/EventData/Measurement.hpp	53.84% <ø> (ø)
...lude/Acts/EventData/SingleBoundTrackParameters.hpp	52.08% <ø> (ø)
...cts/EventData/SingleCurvilinearTrackParameters.hpp	28.57% <ø> (ø)
...clude/Acts/EventData/SingleFreeTrackParameters.hpp	54.83% <ø> (ø)
...lude/Acts/EventData/detail/residual_calculator.hpp	100.00% <ø> (ø)
Core/include/Acts/Fitter/GainMatrixUpdater.hpp	11.36% <0.00%> (ø)
Core/include/Acts/Propagator/AtlasStepper.hpp	71.39% <0.00%> (-0.04%)	⬇️
Core/include/Acts/Surfaces/detail/LineSurface.ipp	36.15% <0.00%> (+0.27%)	⬆️
Core/include/Acts/Surfaces/detail/Surface.ipp	71.83% <0.00%> (ø)
...include/Acts/Vertexing/GridDensityVertexFinder.ipp	47.22% <0.00%> (ø)
... and 15 more

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[msmk0]

@paulgessinger I request you as a reviewer since you were the one who was complaining about the long type names in the first place 😄

[paulgessinger]

The replacements in the description seem fine to me. I trust you to be able to do search & replace so if it compiles, I'm ok to merge it.

[msmk0]

Yes, this is purely search and replace. I just saw that I need to do the same for the alignment parameter definitions. I will open another PR for this to avoid blocking this one any further.