sysutils/apachetop: update to 0.19.7

ChangeLog: https://github.com/tessus/apachetop/blob/master/ChangeLog

• attempt to find ncurses via pkg-config first (@Polynomial-C)
• add .editorconfig for consistent coding style

PR: 265908
Reported by: gaod@hychen.org
Approved by: lukasz@wasikowski.net (maintainer)