Devtools improvements I (#1392)

* devtools: fix showing entire depth instead of bits

* devtools: show button for stage instead of menu bar

- fix batch view dockspace not rendering when window collapsed

* devtools: removed useless "Batch" collapse & don't collapse last batch

* devtools: refactor DrawRow to templating

* devtools: reg popup size adjusted to the content

* devtools: better window names

* devtools: regview layout compacted

* devtools: option to show collapsed frame dump

keep most popups open when selection changes
best popup windows positioning

* devtools: show compute shader regs

* devtools: tips popup

src/common/bit_field.h

@@ -81,7 +81,9 @@
 #pragma pack(1)
 template <std::size_t Position, std::size_t Bits, typename T>
 struct BitField {
-private:
+
+    using Type = T;
+
     // UnderlyingType is T for non-enum types and the underlying type of T if
     // T is an enumeration. Note that T is wrapped within an enable_if in the
     // former case to workaround compile errors which arise when using
@@ -92,7 +94,6 @@ private:
     // We store the value as the unsigned type to avoid undefined behaviour on value shifting
     using StorageType = std::make_unsigned_t<UnderlyingType>;
 
-public:
     /// Constants to allow limited introspection of fields if needed
     static constexpr std::size_t position = Position;
     static constexpr std::size_t bits = Bits;