Passkeys improvements (#10318)

Refactors the Passkey implementation to include more checks and a structure that is more aligned with the official specification.
Notable changes:
- _BrowserService_ no longer does the checks by itself. A new class _BrowserPasskeysClient_ constructs the relevant objects, acting as a client. _BrowserService_ only acts as a bridge between the client and _BrowserPasskeys_ (authenticator) and calls the relevant popups for user interaction.
- A new helper class _PasskeyUtils_ includes the actual checks and parses the objects.
- _BrowserPasskeys_ is pretty much intact, but some functions have been moved to PasskeyUtils.
- Fixes Ed25519 encoding in _BrowserCBOR_.
- Adds new error messages.
- User confirmation for Passkey retrieval is also asked even if `discouraged` is used. This goes against the specification, but currently there's no other way to verify the user.
- `cross-platform` is also accepted for compatibility. This could be removed if there's a potential issue with it.
- Extension data is now handled correctly during Authentication.
- Allowed and excluded credentials are now handled correctly.
- `KPEX_PASSKEY_GENERATED_USER_ID` is renamed to `KPEX_PASSKEY_CREDENTIAL_ID`
- Adds a new option "Allow localhost with Passkeys" to Browser Integration -> Advanced tab. By default it's not allowed to access HTTP sites, but `http://localhost` can be allowed for debugging and testing purposes for local servers.
- Add tag `Passkey` to a Passkey entry, or an entry with an imported Passkey.

Fixes #10287.

share/translations/keepassxc_en.ts

@@ -976,6 +976,10 @@ Do you want to overwrite the Passkey in %1 - %2?</source>
         <source>KeePassXC - New key association request</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>Passkey</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>BrowserSettingsWidget</name>
@@ -1222,6 +1226,14 @@ Do you want to overwrite the Passkey in %1 - %2?</source>
         <source>&lt;b&gt;Error:&lt;/b&gt; The installed proxy executable is missing from the expected location: %1&lt;br/&gt;Please set a custom proxy location in the advanced settings or reinstall the application.</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>Allows using insecure http://localhost with Passkeys for testing purposes.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Allow using localhost with Passkeys</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>CloneDialog</name>
@@ -8419,10 +8431,6 @@ Kernel: %3 %4</source>
         <source>Invalid URL provided</source>
         <translation type="unfinished"></translation>
     </message>
-    <message>
-        <source>Resident Keys are not supported</source>
-        <translation type="unfinished"></translation>
-    </message>
     <message>
         <source>Passkeys</source>
         <translation type="unfinished"></translation>
@@ -8483,6 +8491,38 @@ Kernel: %3 %4</source>
         <source>Failed to decrypt key data.</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>Origin is empty or not allowed</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Effective domain is not a valid domain</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Origin and RP ID do not match</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>No supported algorithms were provided</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Wait for timer to expire</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Unknown Passkeys error</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Challenge is shorter than required minimum length</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>user.id does not match the required length</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>QtIOCompressor</name>