fix: add missing @deprecated and @since to javadoc (#210)

* fix: add missing `@deprecated` and `@since` to javadoc

Add some missing javadoc.

Fix some method visibility issues and remove use of deprecated methods
from code.

* fix: remove redundant `@since` on methods

* Change groupid to groupId in javadoc

Author: dwalluck

src/main/java/com/github/packageurl/MalformedPackageURLException.java

@@ -34,8 +34,6 @@ public class MalformedPackageURLException extends Exception {
 
     /**
      * Constructs a {@code MalformedPackageURLException} with no detail message.
-     *
-     * @since 1.0.0
      */
     public MalformedPackageURLException() {}
 
@@ -44,7 +42,6 @@ public MalformedPackageURLException() {}
      * specified detail message.
      *
      * @param msg the detail message
-     * @since 1.0.0
      */
     public MalformedPackageURLException(@Nullable String msg) {
         super(msg);