started converting to use optparse-applicative

This is a work in progress. It compiles and is able to do basic command
dispatch, including git autocorrection, while using optparse-applicative
for the core commandline parsing.

* Many commands are temporarily disabled before conversion.
* Options are not wired in yet.
* cmdnorepo actions don't work yet.

Also, removed the [Command] list, which was only used in one place.

Command/Whereis.hs

@@ -15,10 +15,10 @@ import Remote
 import Logs.Trust
 import Logs.Web
 
-cmd :: [Command]
-cmd = [noCommit $ withOptions (jsonOption : annexedMatchingOptions ++ keyOptions) $
+cmd :: Command
+cmd = noCommit $ withOptions (jsonOption : annexedMatchingOptions ++ keyOptions) $
 	command "whereis" paramPaths seek SectionQuery
-		"lists repositories that have file content"]
+		"lists repositories that have file content"
 
 seek :: CommandSeek
 seek ps = do