graphics: option to change monitor resolution (#689)

## Link to GitHub Issue or related Pull Request, if one exists
n/a

## Description of change
Add a new option under `Monitor` group to change the monitor resolution
before booting the game, very similar to how orientation / refresh rate
options work.

This would be useful for games like Polaris Chord that boots at current
resolution but manages to have graphical issues when not in 1080p.

## Testing

src/spice2x/launcher/launcher.cpp

@@ -385,6 +385,16 @@ int main_implementation(int argc, char *argv[]) {
         monitor_orientation = ORIENTATION_CW;
     }
 
+    std::optional<std::pair<uint32_t, uint32_t>> monitor_resolution;
+    if (options[launcher::Options::ChangeResolution].is_active()) {
+        std::pair<uint32_t, uint32_t> result;
+        if (parse_width_height(options[launcher::Options::ChangeResolution].value_text(), result)) {
+            monitor_resolution = result;
+        } else if (!cfg_run && !cfg::CONFIGURATOR_STANDALONE) {
+            log_fatal("launcher", "failed to parse -changeres");
+        }
+    }
+
     if (options[launcher::Options::spice2x_NoD3D9DeviceHook].value_bool()) {
         D3D9_DEVICE_HOOK_DISABLE = true;
         // touch emulation gets disabled, might as well turn these on
@@ -2189,7 +2199,7 @@ int main_implementation(int argc, char *argv[]) {
     if (options[launcher::Options::PrimaryMonitor].is_active()) {
         change_primary_monitor(options[launcher::Options::PrimaryMonitor].value_text());
     }
-    update_monitor_on_boot(monitor_orientation, GRAPHICS_FORCE_REFRESH);
+    update_monitor_on_boot(monitor_orientation, GRAPHICS_FORCE_REFRESH, monitor_resolution);
 
     // initialize raw input
     RI_MGR = std::make_unique<rawinput::RawInputManager>();

src/spice2x/launcher/options.cpp

@@ -1920,6 +1920,15 @@ static const std::vector<OptionDefinition> OPTION_DEFINITIONS = {
             {"3", "Landscape, Flipped"}
         },
     },
+    {
+        // ChangeResolution
+        .title = "Change Monitor Resolution",
+        .name = "changeres",
+        .desc = "Changes monitor resolution before booting the game.",
+        .type = OptionType::Text,
+        .setting_name = "1280,720",
+        .category = "Monitor"
+    },
     {
         .title = "AVS Log Level",
         .name = "loglevel",

src/spice2x/launcher/options.h

@@ -199,6 +199,7 @@ namespace launcher {
             LoadStubs,
             AdjustOrientation,
             spice2x_AutoOrientation,
+            ChangeResolution,
             LogLevel,
             EAAutomap,
             EANetdump,