Support reading `boolean[]`/`short[]`/`float[]` values

[cowtowncoder]

(note: related to #196)

So: reading (deserializing) of some primitive array types -- like int[] and long[] and double[] -- is already supported, but others not.

Let's add support for:

• boolean[]
• short[]
• float[]

Files to modify are:

• jr-objects/src/main/java/com/fasterxml/jackson/jr/ob/impl/SimpleValueReader.java
• jr-objects/src/test/java/com/fasterxml/jackson/jr/ob/PrimitiveArrayTest.java