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Description of Change

Add RLOC16 in otPrintNetworkInformation(). RLOC16, which represents the last 16 bits of the RLOC.
https://openthread.io/guides/thread-primer/ipv6-addressing#how_a_routing_locator_is_generated

Tests scenarios

Tested with ESP32-C6 DevKit. I got the RLOC16

09:19:59.609 -> ==============================================
09:19:59.609 -> Role: Router
09:19:59.609 -> RLOC16: 0x3c00
09:19:59.609 -> Network Name: MyHome
09:19:59.609 -> Channel: 25
09:19:59.609 -> PAN ID: 0x1234
09:19:59.609 -> Extended PAN ID: a748dbb0ecc9****
09:19:59.609 -> Network Key: 7226b9ec8288c183a90c8ee53f******

Related links

Closes #11479

	Warnings
⚠️	The source branch "RLOC16" incorrect format: contains uppercase letters. This can cause troubles on case-insensitive file systems (macOS). Please rename your branch.

👋 Hello lboue, we appreciate your contribution to this project!

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Generated by 🚫 dangerJS against 9b18d00

Test Results

 76 files   76 suites   12m 45s ⏱️
 38 tests  38 ✅ 0 💤 0 ❌
241 runs  241 ✅ 0 💤 0 ❌

Results for commit 9b18d00.

♻️ This comment has been updated with latest results.

Memory usage test (comparing PR against master branch)

The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.

Memory	FLASH [bytes]		FLASH [%]		RAM [bytes]		RAM [%]
Target	DEC	INC	DEC	INC	DEC	INC	DEC	INC
ESP32C6	💚 -110K	⚠️+50	💚 -10.44	0.00	💚 -384	0	💚 -0.82	0.00
ESP32H2	💚 -110K	⚠️+46	💚 -10.25	0.00	💚 -376	0	💚 -0.82	0.00

Click to expand the detailed deltas report [usage change in BYTES]

Target	ESP32C6		ESP32H2
Example	FLASH	RAM	FLASH	RAM
libraries/OpenThread/examples/CLI/COAP/coap_lamp	0	0	0	0
libraries/OpenThread/examples/CLI/COAP/coap_switch	0	0	0	0
libraries/OpenThread/examples/CLI/SimpleCLI	0	0	0	0
libraries/OpenThread/examples/CLI/SimpleNode	⚠️+46	0	⚠️+46	0
libraries/OpenThread/examples/CLI/SimpleThreadNetwork/ExtendedRouterNode	⚠️+50	0	⚠️+46	0
libraries/OpenThread/examples/CLI/SimpleThreadNetwork/LeaderNode	0	0	0	0
libraries/OpenThread/examples/CLI/SimpleThreadNetwork/RouterNode	0	0	0	0
libraries/OpenThread/examples/CLI/ThreadScan	0	0	0	0
libraries/OpenThread/examples/CLI/onReceive	0	0	0	0
libraries/OpenThread/examples/Native/SimpleThreadNetwork/LeaderNode	💚 -110K	💚 -384	💚 -110K	💚 -376
libraries/OpenThread/examples/Native/SimpleThreadNetwork/RouterNode	💚 -110K	💚 -384	💚 -110K	💚 -376

Thanks @lboue! LGTM.