cfg: use %appdata%\spice2x for new config files (#300)

## Link to GitHub Issue, if one exists
n/a

## Description of change

For JSON config files of the following features:

* patch manager
* screen resize
* IIDX camera hook
* card manager

when saving a new file, store them in %appdata%\spice2x instead of
%appdata%.

On load:
1. If the JSON file exists in %appdata%\spice2x, use that (new path)
1. If the JSON file exists in %appdata%, continue to use that (legacy
path)

It's common for people to have mixed versions of spicetools/spice2x so
we'll continue to read from the %appdata% root if the files are there,
but with a preference for the new path. We will not forcibly move files.

spicetools.xml will continue to live in the %appdata% root. Moving this
will confuse a lot of people, so I'm avoiding this.

Also, this fixes `-patchcfgpath` and `-resizecfgpath` to create
directories as needed (previously the parent directory must have existed
first)

## Testing
Tested -

* existing config files are continued to be read from %appdata%
* new files get created in %appdata%\spice2x\... (both in spicecfg and
in overlay)
* can provide custom path for `-patchcfgpath` `-resizecfgpath` and
observe directories + file created in custom path, try absolute or local
relative paths

src/spice2x/overlay/windows/card_manager.cpp

@@ -29,8 +29,11 @@ namespace overlay::windows {
         }
 
         this->toggle_button = games::OverlayButtons::ToggleCardManager;
-        this->config_path = std::filesystem::path(_wgetenv(L"APPDATA")) / L"spicetools_card_manager.json";
-        if (fileutils::file_exists(this->config_path)) {
+
+        bool file_exists = false;
+        this->config_path =
+            fileutils::get_config_file_path("cardmanager", "spicetools_card_manager.json", &file_exists);
+        if (file_exists) {
             this->config_load();
         }
 
@@ -434,8 +437,6 @@ namespace overlay::windows {
     }
 
     void CardManager::config_load() {
-        log_info("cardmanager", "loading config");
-
         // clear cards
         this->cards.clear();
 
@@ -566,10 +567,10 @@ namespace overlay::windows {
         doc.Accept(writer);
 
         // save to file
-        if (fileutils::text_write(this->config_path, buffer.GetString())) {
+        if (fileutils::write_config_file("cardmanager", this->config_path, buffer.GetString())) {
             this->config_dirty = false;
         } else {
-            log_warning("cardmanager", "unable to save config file to {}", this->config_path.string());
+            log_warning("cardmanager", "unable to save config file");
         }
     }
 

src/spice2x/overlay/windows/patch_manager.cpp

@@ -219,7 +219,8 @@ namespace overlay::windows {
             this->config_path = PATCH_MANAGER_CFG_PATH_OVERRIDE.value();
             log_info("patchmanager", "using custom config file path: {}", this->config_path.string().c_str());
         } else {
-            this->config_path = std::filesystem::path(_wgetenv(L"APPDATA")) / L"spicetools_patch_manager.json";
+            this->config_path =
+                fileutils::get_config_file_path("patchmanager", "spicetools_patch_manager.json");
         }
 
         if (!ldr_registered) {
@@ -1127,7 +1128,7 @@ namespace overlay::windows {
         doc.Accept(writer);
 
         // save to file
-        if (fileutils::text_write(config_path, buffer.GetString())) {
+        if (fileutils::write_config_file("patchmanager", config_path, buffer.GetString())) {
             config_dirty = false;
         } else {
             log_warning("patchmanager", "unable to save config file");