external: add nlohmann_json v3.11.2

Single header downloaded from https://github.com/nlohmann/json/releases/tag/v3.11.2

Add a custom CMakeLists.txt to have a `nlohmann_json::nlohmann_json`
target to link against (just like the full project)
This commit is contained in:
Reinhold Gschweicher
2022-09-05 22:36:26 +02:00
parent 9841601106
commit 4dea63843e
2 changed files with 24610 additions and 0 deletions

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