feat: add `math/base/special/havercosf` #21105

Job	Run time
Rebase this PR on top of develop branch	0s
Merge changes from develop branch into this PR	0s
Auto-fix lint errors	0s
Check for required files	0s
Update copyright header years	0s
Remove in-progress label	0s
Post a comment with make command instructions	-6s
Print a list of available slash commands	-7s
Add initial reaction	-10s
	-23s

Provide feedback