Add SetBit, and FlipBit methods to block

GCryptLib/include/GCrypt/Block.h

@@ -126,6 +126,12 @@ namespace Leonetienne::GCrypt {
       //! Will return the state of any given bit
       [[nodiscard]] bool GetBit(const std::size_t index) const;
 
+      //! Will set the state of any given bit
+      void SetBit(const std::size_t index, const bool state);
+
+      //! Will flip the state of any given bit
+      void FlipBit(const std::size_t index);
+
       //! Returns 32-bit chunks of data, indexed by matrix coordinates (0-3)
       [[nodiscard]] std::uint32_t& Get(const std::uint8_t row, const std::uint8_t column);
       //! Returns 32-bit chunks of data, indexed by matrix coordinates (0-3)