Allow custom plot title

[camposandro]

Allow for custom plot titles in plot_pixels and plot_points.

• My PR includes a link to the issue that I am addressing

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 92.83%. Comparing base (4ef9952) to head (751f6bd).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/hats/inspection/visualize_catalog.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #396      +/-   ##
==========================================
- Coverage   92.87%   92.83%   -0.05%     
==========================================
  Files          49       49              
  Lines        2134     2136       +2     
==========================================
+ Hits         1982     1983       +1     
- Misses        152      153       +1     

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[github-actions]

Before [4ef9952]	After [9aa88a1]	Ratio	Benchmark (Parameter)
13.3±0.4ms	13.6±0.4ms	1.02	benchmarks.Suite.time_inner_pixel_alignment
980±3μs	991±8μs	1.01	benchmarks.time_test_cone_filter_multiple_order
92.8±0.4ms	92.9±0.9ms	1	benchmarks.MetadataSuite.time_load_partition_join_info
125±1ms	125±1ms	1	benchmarks.time_test_alignment_even_sky
93.7±1ms	92.5±0.5ms	0.99	benchmarks.MetadataSuite.time_load_partition_info_order7
384±3ms	378±3ms	0.99	benchmarks.Suite.time_outer_pixel_alignment
50.3±0.8ms	50.0±1ms	0.99	benchmarks.Suite.time_pixel_tree_creation
23.4±0.3ms	22.9±1ms	0.98	benchmarks.MetadataSuite.time_load_partition_info_order6
116±2ms	111±2ms	0.96	benchmarks.Suite.time_paths_creation

Click here to view all benchmarks.