Start CMake modernization scaffold

cmake/PanoPainterWarnings.cmake

@@ -0,0 +1,40 @@
+function(pp_configure_project_warnings target)
+    if(MSVC)
+        target_compile_options(${target} INTERFACE
+            /W4
+            /permissive-
+            /Zc:__cplusplus
+            /Zc:preprocessor)
+        if(PP_ENABLE_MSVC_ANALYZE)
+            target_compile_options(${target} INTERFACE /analyze)
+        endif()
+    else()
+        target_compile_options(${target} INTERFACE
+            -Wall
+            -Wextra
+            -Wpedantic
+            -Wconversion
+            -Wshadow
+            -Wnull-dereference)
+    endif()
+
+    if(PP_ENABLE_ASAN)
+        if(MSVC)
+            target_compile_options(${target} INTERFACE /fsanitize=address)
+            target_link_options(${target} INTERFACE /fsanitize=address)
+        else()
+            target_compile_options(${target} INTERFACE -fsanitize=address)
+            target_link_options(${target} INTERFACE -fsanitize=address)
+        endif()
+    endif()
+
+    if(PP_ENABLE_UBSAN AND NOT MSVC)
+        target_compile_options(${target} INTERFACE -fsanitize=undefined)
+        target_link_options(${target} INTERFACE -fsanitize=undefined)
+    endif()
+
+    if(PP_ENABLE_TSAN AND NOT MSVC)
+        target_compile_options(${target} INTERFACE -fsanitize=thread)
+        target_link_options(${target} INTERFACE -fsanitize=thread)
+    endif()
+endfunction()