feat: add basic github forge

Signed-off-by: kjuulh <contact@kjuulh.io>

templates/fe/configs/github.com.toml

@@ -1,5 +1,12 @@
-type = "github"
-deny = [".*"]
+# schedule.cron = "0 * * * * *"
+schedule.once = true
+
+allow = ["^canopy-.*$"]
+deny = ["^infrastructure-.*$", "^canopy-data-gateway$"]
+
+[github]
+credentials.token_env = "GITHUB_ACCESS_TOKEN"
+organisation = "understory-io"
 
 [policies]
 squash_merge_only.enabled = true