internal/rosa: key-value type

This type is used very frequently. The new type is much easier to type and can receive helper methods eventually if needed.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/elfutils.go

@@ -22,7 +22,7 @@ func (t Toolchain) newElfutils() (pkg.Artifact, string) {
 		// nonstandard glibc extension
 		SkipCheck: true,
 
-		Configure: [][2]string{
+		Configure: []KV{
 			{"enable-deterministic-archives"},
 		},
 	},