Add lorawan device model custom propertis support

[kbeaugrand]

Description

What's new?

• Add device model properties support #385

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

[codecov]

Codecov Report

Merging #417 (96a56c3) into main (8c62f6d) will increase coverage by 0.23%.
The diff coverage is 94.59%.

@@            Coverage Diff             @@
##             main     #417      +/-   ##
==========================================
+ Coverage   57.14%   57.37%   +0.23%     
==========================================
  Files         109      111       +2     
  Lines        3269     3287      +18     
==========================================
+ Hits         1868     1886      +18     
  Misses       1401     1401              

Impacted Files	Coverage Δ
.../Server/Controllers/v1.0/DeviceModelsController.cs	100.00% <ø> (ø)
...lers/v1.0/LoRaWAN/LoRaWANDeviceModelsController.cs	0.00% <ø> (ø)
...ollers/v1.0/DeviceModelPropertiesControllerBase.cs	93.22% <93.22%> (ø)
...ontrollers/v1.0/DeviceModelPropertiesController.cs	100.00% <100.00%> (+6.77%)	⬆️
...trollers/v1.0/LoRaWAN/LoRaWANCommandsController.cs	94.20% <100.00%> (ø)
.../LoRaWAN/LoRaWANDeviceModelPropertiesController.cs	100.00% <100.00%> (ø)

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