Add `--preload` option to pin command #565

Job	Run time
Tests (Ruby 3.2, Gemfile)	1m 30s
Tests (Ruby 3.2, gemfiles/rails_7_0_propshaft.gemfile)	13s
Tests (Ruby 3.2, gemfiles/rails_7_1_propshaft.gemfile)	45s
Tests (Ruby 3.2, gemfiles/rails_7_2_propshaft.gemfile)	59s
Tests (Ruby 3.2, gemfiles/rails_main_propshaft.gemfile)	1m 3s
Tests (Ruby 3.2, gemfiles/rails_7_0_sprockets.gemfile)	14s
Tests (Ruby 3.2, gemfiles/rails_7_1_sprockets.gemfile)	46s
Tests (Ruby 3.2, gemfiles/rails_7_2_sprockets.gemfile)	57s
Tests (Ruby 3.2, gemfiles/rails_main_sprockets.gemfile)	1m 4s
Tests (Ruby 3.3, Gemfile)	1m 35s
Tests (Ruby 3.3, gemfiles/rails_7_0_propshaft.gemfile)	11s
Tests (Ruby 3.3, gemfiles/rails_7_1_propshaft.gemfile)	50s
Tests (Ruby 3.3, gemfiles/rails_7_2_propshaft.gemfile)	1m 4s
Tests (Ruby 3.3, gemfiles/rails_main_propshaft.gemfile)	1m 2s
Tests (Ruby 3.3, gemfiles/rails_7_0_sprockets.gemfile)	10s
Tests (Ruby 3.3, gemfiles/rails_7_1_sprockets.gemfile)	44s
Tests (Ruby 3.3, gemfiles/rails_7_2_sprockets.gemfile)	1m 3s
Tests (Ruby 3.3, gemfiles/rails_main_sprockets.gemfile)	1m 2s
Tests (Ruby 3.1, gemfiles/rails_7_0_propshaft.gemfile)	12s
Tests (Ruby 3.1, gemfiles/rails_7_1_propshaft.gemfile)	39s
Tests (Ruby 3.1, gemfiles/rails_7_0_sprockets.gemfile)	11s
Tests (Ruby 3.1, gemfiles/rails_7_1_sprockets.gemfile)	42s
	16m 56s

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