Everywhere: Rename {Deprecated => Byte}String

This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')

Userland/Libraries/LibCrypto/Cipher/AES.cpp

@@ -24,20 +24,20 @@ constexpr void swap_keys(u32* keys, size_t i, size_t j)
 }
 
 #ifndef KERNEL
-DeprecatedString AESCipherBlock::to_deprecated_string() const
+ByteString AESCipherBlock::to_byte_string() const
 {
     StringBuilder builder;
     for (auto value : m_data)
         builder.appendff("{:02x}", value);
-    return builder.to_deprecated_string();
+    return builder.to_byte_string();
 }
 
-DeprecatedString AESCipherKey::to_deprecated_string() const
+ByteString AESCipherKey::to_byte_string() const
 {
     StringBuilder builder;
     for (size_t i = 0; i < (rounds() + 1) * 4; ++i)
         builder.appendff("{:02x}", m_rd_keys[i]);
-    return builder.to_deprecated_string();
+    return builder.to_byte_string();
 }
 #endif
 

Userland/Libraries/LibCrypto/Cipher/AES.h

@@ -14,7 +14,7 @@
 #include <LibCrypto/Cipher/Mode/GCM.h>
 
 #ifndef KERNEL
-#    include <AK/DeprecatedString.h>
+#    include <AK/ByteString.h>
 #endif
 
 namespace Crypto::Cipher {
@@ -48,7 +48,7 @@ public:
     }
 
 #ifndef KERNEL
-    DeprecatedString to_deprecated_string() const;
+    ByteString to_byte_string() const;
 #endif
 
 private:
@@ -64,7 +64,7 @@ struct AESCipherKey : public CipherKey {
     static bool is_valid_key_size(size_t bits) { return bits == 128 || bits == 192 || bits == 256; }
 
 #ifndef KERNEL
-    DeprecatedString to_deprecated_string() const;
+    ByteString to_byte_string() const;
 #endif
 
     u32 const* round_keys() const
@@ -120,7 +120,7 @@ public:
     virtual void decrypt_block(BlockType const& in, BlockType& out) override;
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const override
+    virtual ByteString class_name() const override
     {
         return "AES";
     }

Userland/Libraries/LibCrypto/Cipher/Cipher.h

@@ -112,7 +112,7 @@ public:
     virtual void decrypt_block(BlockType const& in, BlockType& out) = 0;
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const = 0;
+    virtual ByteString class_name() const = 0;
 #endif
 
 protected:

Userland/Libraries/LibCrypto/Cipher/Mode/CBC.h

@@ -11,7 +11,7 @@
 #include <LibCrypto/Cipher/Mode/Mode.h>
 
 #ifndef KERNEL
-#    include <AK/DeprecatedString.h>
+#    include <AK/ByteString.h>
 #endif
 
 namespace Crypto::Cipher {
@@ -29,12 +29,12 @@ public:
     }
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const override
+    virtual ByteString class_name() const override
     {
         StringBuilder builder;
         builder.append(this->cipher().class_name());
         builder.append("_CBC"sv);
-        return builder.to_deprecated_string();
+        return builder.to_byte_string();
     }
 #endif
 

Userland/Libraries/LibCrypto/Cipher/Mode/CTR.h

@@ -11,7 +11,7 @@
 #include <LibCrypto/Cipher/Mode/Mode.h>
 
 #ifndef KERNEL
-#    include <AK/DeprecatedString.h>
+#    include <AK/ByteString.h>
 #endif
 
 namespace Crypto::Cipher {
@@ -104,12 +104,12 @@ public:
     }
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const override
+    virtual ByteString class_name() const override
     {
         StringBuilder builder;
         builder.append(this->cipher().class_name());
         builder.append("_CTR"sv);
-        return builder.to_deprecated_string();
+        return builder.to_byte_string();
     }
 #endif
 

Userland/Libraries/LibCrypto/Cipher/Mode/GCM.h

@@ -15,7 +15,7 @@
 #include <LibCrypto/Verification.h>
 
 #ifndef KERNEL
-#    include <AK/DeprecatedString.h>
+#    include <AK/ByteString.h>
 #endif
 
 namespace Crypto::Cipher {
@@ -44,12 +44,12 @@ public:
     }
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const override
+    virtual ByteString class_name() const override
     {
         StringBuilder builder;
         builder.append(this->cipher().class_name());
         builder.append("_GCM"sv);
-        return builder.to_deprecated_string();
+        return builder.to_byte_string();
     }
 #endif
 

Userland/Libraries/LibCrypto/Cipher/Mode/Mode.h

@@ -34,7 +34,7 @@ public:
     }
 
 #ifndef KERNEL
-    virtual DeprecatedString class_name() const = 0;
+    virtual ByteString class_name() const = 0;
 #endif
 
     T& cipher()