Document testing & build_conversion purposes

Formatter also relocated some imports

Test: Existing tests pass
Change-Id: I48b1cb65400e463a6b4e91fd9fe76e13d8d81cd6

bp2build/build_conversion.go

@@ -14,14 +14,20 @@
 
 package bp2build
 
+/*
+For shareable/common functionality for conversion from soong-module to build files
+for queryview/bp2build
+*/
+
 import (
-	"android/soong/android"
-	"android/soong/bazel"
 	"fmt"
 	"reflect"
 	"sort"
 	"strings"
 
+	"android/soong/android"
+	"android/soong/bazel"
+
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 )

bp2build/testing.go

@@ -1,5 +1,10 @@
 package bp2build
 
+/*
+For shareable/common bp2build testing functionality and dumping ground for
+specific-but-shared functionality among tests in package
+*/
+
 import (
 	"strings"
 	"testing"