autotools: Include a generic local-rules.mk file

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
post-receive: Fix repository name guessing

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
webhook: Rename functions

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
libgit-eventc: Add commit debug output

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
libgit-eventc: Make URL optional

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
libgit-eventc: Add files support

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
libgit-eventc: Add files generation API

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
post-receive: Add files support

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
webhook/github: Add files support

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
README: Add files documentation

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>