Add npm, maven, conan configs (excluding cache)

dot_conan/settings.yml.old

@@ -0,0 +1,27 @@
+# Only for cross building, 'os_build/arch_build' is the system that runs Conan
+os_build: [Windows]
+arch_build: [x86, x86_64]
+
+# Only for building cross compilation tools, 'os_target/arch_target' is the system for
+# which the tools generate code
+os_target: [Windows]
+arch_target: [x86, x86_64]
+
+# Rest of the settings are "host" settings:
+# - For native building/cross building: Where the library/program will run.
+# - For building cross compilation tools: Where the cross compiler will run.
+os:
+    Windows:
+        subsystem: [None]
+arch: [x86, x86_64]
+compiler:
+    Visual Studio: &visual_studio
+        runtime: [MD, MT, MTd, MDd]
+        version: ["8", "9", "10", "12", "14", "15", "16"]
+        toolset: [v80, v90, v100, v120, v120_xp, v141, v142]
+        cppstd: [None, 11, 14, 17, 20]
+
+build_type: [Debug, Release]
+
+
+cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]  # Deprecated, use compiler.cppstd