[Enhancement] rs2md: Outsource Logic to Dedicated Struct

[kevinmatthes]

No description provided.

[github-actions]

Filename                            Stmts    Miss  Cover    Missing
--------------------------------  -------  ------  -------  ---------------------------------------
src/pattern/io_processor.rs            56      35  37.50%   86-144
src/pattern/writer.rs                 125      28  77.60%   134-139, 188-200, 232-245
src/pattern/buffer.rs                  33       0  100.00%
src/traits/append_as_line.rs           12       0  100.00%
src/traits/colour_message.rs           19       0  100.00%
src/traits/convert_buffer.rs           30       0  100.00%
src/traits/file_formats.rs             25       0  100.00%
src/traits/prefer.rs                    5       0  100.00%
src/traits/read_file.rs                56      31  44.64%   54-56, 69-71, 77-100, 105, 112-123, 135
src/traits/to_stderr.rs                 6       0  100.00%
src/changelog/fragment.rs              84       0  100.00%
src/changelog/ronlog.rs               206     141  31.55%   28-268, 334
src/changelog/comment_changes.rs      272     272  0.00%    26-449
src/cff/cffreference.rs               105       0  100.00%
src/cff/cff_create.rs                 224       2  99.11%   239-247
src/macros.rs                          23       0  100.00%
src/application.rs                     54      54  0.00%    32-182
src/increment_version.rs              178      26  85.39%   32-48, 123-125, 144, 150-155, 261-278
src/main.rs                             3       3  0.00%    22-24
src/running.rs                          8       0  100.00%
src/version.rs                         69       0  100.00%
src/utilities.rs                       43       4  90.70%   25-38
src/complain.rs                       233      10  95.71%   29-70
src/graphing/graph.rs                 219       0  100.00%
src/graphing/agd.rs                   228       2  99.12%   355, 377
TOTAL                                2316     608  73.75%