[Spark][Kernel] Add isFatal detection to LogStoreErors (delta-io#3743)

#### Which Delta project/connector is this regarding?
- [x] Spark
- [ ] Standalone
- [ ] Flink
- [x] Kernel
- [ ] Other (fill in here)

## Description

Simple PR that adds `isFatal` utility that can be used in
`delta-storage`

## How was this patch tested?

Build

## Does this PR introduce _any_ user-facing changes?

No

storage/src/main/java/io/delta/storage/internal/LogStoreErrors.java

@@ -36,6 +36,14 @@ public static boolean isNonFatal(Throwable t) {
         return true;
     }
 
+    /**
+     * Returns true if the provided Throwable is to be considered fatal, or false if it is to be
+     * considered non-fatal
+     */
+    public static boolean isFatal(Throwable t) {
+        return !isNonFatal(t);
+    }
+
     public static IOException incorrectLogStoreImplementationException(Throwable cause) {
         return new IOException(
             String.join("\n",