RM-3668: Fix reading secret from CLI, remove broken FormattedOptionParts.class

* Fix cdoc2-cli encrypting functionality for SymmetricKey (`--secret` parameter)
* Rewrote symmetric key (secret) and password handling in cdoc2-cli
* Introduce `LabeledPassword` and `LabeledSecret` interfaces, with supporting methods (`withPassword` and `withSecrets`) in `EncryptionKeyMaterialCollectionBuilder`
* Removed `FormattedOptionParts` that doesn't really support converting --secret parameter bytes into SecretKey properly.
* Removed `SymmetricKeyUtils`
* Bumped `cdoc2-lib` version into 2.0.0-SNAPSHOT, because of removed classes
* Removed broken _symmetric_.cdoc files from testvectors and replaced them with new ones (or old).

Author: jann0k

cdoc2-cli/pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>ee.cyber.cdoc2</groupId>
             <artifactId>cdoc2-lib</artifactId>
-            <version>1.5.0-SNAPSHOT</version>
+            <version>2.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>