Fix/suppress binder google-explicit-constructor warnings

* Add explicit to conversion constructors/operators
* Use NOLINT or NOLINTNEXTLINE to suppress warnings on intended converters
* Remove redundant explicit of copy constructors

Bug: 28341362
Test: make with WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=-*,google-explicit-constructor
Change-Id: If74d738496c5787c0ec68ff808801c7ff44cf03f
diff --git a/libs/binder/Value.cpp b/libs/binder/Value.cpp
index a28a618..19c57ba 100644
--- a/libs/binder/Value.cpp
+++ b/libs/binder/Value.cpp
@@ -97,7 +97,7 @@
 template<typename T> class Value::Content : public Value::ContentBase {
 public:
     Content() = default;
-    Content(const T & value) : mValue(value) { }
+    explicit Content(const T & value) : mValue(value) { }
 
     virtual ~Content() = default;