Do a large chunk of the move to go

This commit moves a huge chunk of the code to go. The TODO.md document
indicates what is left to be done.

internal/sqle/sqle.go

@@ -0,0 +1,10 @@
+package sqle
+
+import (
+	"github.com/feiin/sqlstring"
+)
+
+// Format formats the provided query with the given parameters.
+func Format(query string, params ...interface{}) string {
+	return sqlstring.Format(query, params...)
+}