[Kernel] Add table feature manipulation utilities in the Protocol (de…

…lta-io#4157)

## Description
Utilities for
* finding the implicitly and explicitly enabled table features
* adding a feature to the protocol and creating an upgraded protocol

## How was this patch tested?
Unittests.

kernel/kernel-api/src/main/java/io/delta/kernel/internal/TransactionBuilderImpl.java

@@ -155,9 +155,9 @@ public Transaction build(Engine engine) {
       if (!newWriterFeatures.isEmpty()) {
         logger.info("Automatically enabling writer features: {}", newWriterFeatures);
         shouldUpdateProtocol = true;
-        List<String> oldWriterFeatures = protocol.getWriterFeatures();
+        Set<String> oldWriterFeatures = protocol.getWriterFeatures();
         protocol = protocol.withNewWriterFeatures(newWriterFeatures);
-        List<String> curWriterFeatures = protocol.getWriterFeatures();
+        Set<String> curWriterFeatures = protocol.getWriterFeatures();
         checkArgument(!Objects.equals(oldWriterFeatures, curWriterFeatures));
         TableFeatures.validateWriteSupportedTable(protocol, metadata, table.getPath(engine));
       }
@@ -287,10 +287,6 @@ private Metadata getInitialMetadata() {
   }
 
   private Protocol getInitialProtocol() {
-    return new Protocol(
-        DEFAULT_READ_VERSION,
-        DEFAULT_WRITE_VERSION,
-        null /* readerFeatures */,
-        null /* writerFeatures */);
+    return new Protocol(DEFAULT_READ_VERSION, DEFAULT_WRITE_VERSION);
   }
 }