[Point] Add new class of massless tracker for multiple purposes

[bodhinandach]

Describe the PR
This PR adds new capabilities to generate a set of points, which is generally defined as a massless tracker for different purposes. This specific PR first introduces an example of its usage to impose a non-conforming Dirichlet BC.

Further details will be updated periodically in this PR.

Related Issues/PRs
N/A

Additional context
Implementation of penalty BC follows:
Chandra, B., Singer, V., Teschemacher, T., Wüchner, R., & Larese, A. (2021). Nonconforming Dirichlet boundary conditions in implicit material point method by means of penalty augmentation. Acta Geotechnica, 16(8), 2315-2335.

[codecov]

Codecov Report

❌ Patch coverage is 35.26171% with 705 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.51%. Comparing base (b690d4a) to head (dfef0ac).

Files with missing lines	Patch %	Lines
include/mesh/mesh.tcc	11.05%	322 Missing ⚠️
include/points/point_base.tcc	25.27%	136 Missing ⚠️
include/solvers/mpm_base.tcc	45.37%	112 Missing ⚠️
include/points/point_dirichlet_penalty.tcc	49.24%	67 Missing ⚠️
include/linear_solvers/assemblers/assembler_base.h	0.00%	15 Missing ⚠️
include/points/point_dirichlet_penalty.h	17.65%	14 Missing ⚠️
include/cells/cell.tcc	14.29%	12 Missing ⚠️
include/points/point_base.h	41.18%	10 Missing ⚠️
include/cells/cell_implicit.tcc	16.67%	5 Missing ⚠️
include/solvers/mpm_scheme/mpm_scheme_newmark.tcc	69.23%	4 Missing ⚠️
... and 6 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #117      +/-   ##
==========================================
- Coverage   95.76%   94.51%   -1.25%     
==========================================
  Files         244      250       +6     
  Lines       51467    52491    +1024     
==========================================
+ Hits        49284    49607     +323     
- Misses       2183     2884     +701     

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