Build subversion with --with-apxs so svn+http can be enabled

[kklem0]

Output of brew config

no

Output of brew doctor

no

Description of issue

Now mod_dav_svn.so and mod_authz_svn.so are missing and it's because subversion builds with --with-apxs=no.
Changing it to --with-apxs=/opt/homebrew/bin/apxs would then generate the required bits for enabling svn+http which is important for svn.

[kklem0]

1. brew install httpd
2. brew edit subversion
3. --with-apxs=no -> --with-apxs=/opt/homebrew/bin/apxs
4. export HOMEBREW_NO_INSTALL_FROM_API=1
5. brew install subversion --verbose --build-from-source

[p-linnane]

Please open a PR for this.