Added spdlog recipe.

recipes/spdlog/recipe.py

@@ -0,0 +1,16 @@
+
+from SCons.Script import *
+
+def cook(env: Environment, git_ref: str = 'v1.x') -> dict:
+    repo = env.Cook('GitBranch', repo_name = 'spdlog', remote_url = 'https://github.com/gabime/spdlog.git', git_ref = git_ref)
+    checkout_root = repo['checkout_root']
+    build_result = env.Cook('CMakeProject', project_root=checkout_root)
+    
+    lib_name = {
+        'debug': 'spdlogd'
+    }.get(env['BUILD_TYPE'], 'spdlog')
+    return {
+        'LIBPATH': build_result['LIBPATH'],
+        'CPPPATH': build_result['CPPPATH'],
+        'LIBS': [lib_name]
+    }