Fix clang-tidy warnings in aapt and aapt2.

* Add explicit keyword to conversion constructors.
* Add NOLINT(implicit) comments for implicit conversion constructors.
Bug: 28341362
* Use const reference type for read-only parameters.
Bug: 30407689
* Add NOLINT to suppress wrong clang-tidy warnings on macros.
Test: build with WITH_TIDY=1

Change-Id: Ibfafb23d9be463b4072745a51a6d9f1812dcac45
diff --git a/tools/aapt2/compile/Pseudolocalizer.h b/tools/aapt2/compile/Pseudolocalizer.h
index 7db88de..91d17d174 100644
--- a/tools/aapt2/compile/Pseudolocalizer.h
+++ b/tools/aapt2/compile/Pseudolocalizer.h
@@ -43,7 +43,7 @@
         kBidi,
     };
 
-    Pseudolocalizer(Method method);
+    explicit Pseudolocalizer(Method method);
     void setMethod(Method method);
     std::string start() { return mImpl->start(); }
     std::string end() { return mImpl->end(); }