[Patch] Use Arrays.copyOf in OsmPrimitive#put(String, String)

[michael2402]

This increases performance for OsmPrimitive#put(String, String) on primitives that already have a lot of keys set. And it cleans up code.

Before patch

TIMER OsmPrimitive#put(String, String) with put/node ratio 0.05: 118ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 0.3: 97ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 3.0: 131ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 20.0: 221ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 200.0: 923ms

With patch applied

TIMER OsmPrimitive#put(String, String) with put/node ratio 0.05: 113ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 0.3: 90ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 3.0: 122ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 20.0: 205ms
TIMER OsmPrimitive#put(String, String) with put/node ratio 200.0: 859ms
]]]

[Don-vip]

In 8652/josm:

fix #11767 - Use Arrays.copyOf in OsmPrimitive#put(String, String) (patch by michael2402)