lthooks: new `\ShowHook` command #3413

Job	Run time
Update TeX Live	15s
Documentation: base	2m 55s
Documentation: base	1m 33s
Documentation: base	3m 15s
Tests: base - build - pdftex	2m 30s
Documentation: required	4m 30s
Tests: base - build - xetex	3m 33s
Tests: base - build - luatex (<first> - m3expl009)	1m 50s
Tests: base - build - luatex (m3expl009 - tlb0001)	1m 55s
Tests: base - build - luatex (tlb0001 - tlcs01a)	2m 27s
Tests: base - build - luatex (tlcs01a - <last>)	1m 33s
Tests: base - config-1run	43s
Tests: base - config-TU	48s
Tests: base - config-legacy	33s
Tests: base - config-lthooks	48s
Tests: base - config-lthooks2	50s
Tests: base - config-ltcmd	48s
Tests: base - config-doc	1m 13s
Tests: base - config-ltmarks	44s
Tests: required/amsmath	1m 22s
Tests: required/cyrillic	38s
Tests: required/firstaid	1m 28s
Tests: required/graphics	55s
Tests: required/latex-lab - build	46s
Tests: required/latex-lab - config-OR	1m 14s
Tests: required/latex-lab - config-math	1m 8s
Tests: required/latex-lab - config-OR-luatex	1m 45s
Tests: required/latex-lab - config-sec	1m 10s
Tests: required/latex-lab - config-toc	2m 2s
Tests: required/latex-lab - config-block	3m 4s
Tests: required/latex-lab - config-LM-tagging	50s
Tests: required/latex-lab - config-graphic	1m 27s
Tests: required/latex-lab - config-minipage	56s
Tests: required/latex-lab - config-float	1m 5s
Tests: required/latex-lab - config-bib	1m 10s
Tests: required/latex-lab - config-table-pdftex	1m 11s
Tests: required/latex-lab - config-table-luatex	1m 34s
Tests: required/tools	4m 6s
Send notifications	0s
	1h 0m 34s

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