Printer: Improvements for displaying large type graphs

[ajor]

• Don't truncate output above 30k characters
• Include enough padding at the begining of lines to account for large node IDs

Before:

[1070]                       Class: ClassName
                            Param                                                                                                                                                                                                                                                                                                          
                              Enum: ParamName (size: 4)

After:

[1070]                       Class: ClassName
                               Param                                                                                                                                                                                                                                                                                                       
                                 Enum: ParamName (size: 4)

[codecov-commenter]

Codecov Report

Merging #176 (55b5e82) into main (02b7641) will decrease coverage by 0.07%.
The diff coverage is 78.26%.

@@            Coverage Diff             @@
##             main     #176      +/-   ##
==========================================
- Coverage   62.58%   62.52%   -0.07%     
==========================================
  Files          88       87       -1     
  Lines        9243     9227      -16     
  Branches     1529     1527       -2     
==========================================
- Hits         5785     5769      -16     
  Misses       2641     2641              
  Partials      817      817              

Impacted Files	Coverage Δ
test/test_add_padding.cpp	91.66% <ø> (ø)
test/test_remove_ignored.cpp	96.66% <ø> (ø)
test/test_type_identifier.cpp	90.62% <ø> (ø)
test/test_flattener.cpp	95.83% <50.00%> (-0.17%)	⬇️
oi/type_graph/PassManager.cpp	100.00% <100.00%> (ø)
oi/type_graph/Printer.cpp	97.10% <100.00%> (+0.13%)	⬆️
oi/type_graph/TypeGraph.h	100.00% <100.00%> (ø)
test/test_drgn_parser.cpp	98.98% <100.00%> (ø)
test/test_remove_top_level_pointer.cpp	100.00% <100.00%> (ø)
test/type_graph_utils.cpp	100.00% <100.00%> (ø)

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