[feature] Fetch + create domain permissions from subscriptions nightly (#3635)

* peepeepoopoo

* test domain perm subs

* swagger

* envparsing

* dries your wets

* start on docs

* finish up docs

* copy paste errors

* rename actions package

* rename force -> skipCache

* move obfuscate parse nearer to where err is checked

* make higherPrios a simple slice

* don't use receiver for permsFrom funcs

* add more context to error logs

* defer finished log

* use switch for permType instead of if/else

* thanks linter, love you <3

* validate csv headers before full read

* use bufio scanner

testrig/config.go

@@ -99,6 +99,8 @@ func testDefaults() config.Configuration {
 				TagStr: "en-gb",
 			},
 		},
+		InstanceSubscriptionsProcessFrom:  "23:00",        // 11pm,
+		InstanceSubscriptionsProcessEvery: 24 * time.Hour, // 1/day.
 
 		AccountsRegistrationOpen: true,
 		AccountsReasonRequired:   true,