add PKGBUILD editing support

README.md

data/config/pamac.conf

resources/manager_window.ui

resources/transaction_sum_dialog.ui

src/alpm_utils.vala

src/aur.vala

src/cli.vala

src/common.vala

src/common_daemon.vala

src/database.vala

src/manager_window.vala

src/package.vala

src/pamac_config.vala

src/preferences_dialog.vala

src/system_daemon.vala

src/transaction-cli.vala

src/transaction-gtk.vala

src/transaction.vala

src/transaction_interface.vala

src/transaction_interface_daemon.vala