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/strace.go

@@ -23,7 +23,7 @@ sed -i 's/unsigned int msg_len;$/uint32_t msg_len;/g' \
 	tests/nlattr.c
 `,
 	}, &MakeHelper{
-		Configure: [][2]string{
+		Configure: []KV{
 			// tests broken on clang
 			{"disable-gcc-Werror"},