Build added win32 compatibility (#1238)

v2/cmd/wails/internal/commands/build/build.go

@@ -225,6 +225,7 @@ func AddBuildSubcommand(app *clir.Cli, w io.Writer) {
 			"windows",
 			"windows/amd64",
 			"windows/arm64",
+			"windows/386",
 		})
 
 		outputBinaries := map[string]string{}

v2/pkg/commands/build/packager.go

@@ -287,6 +287,7 @@ func compileResources(options *Options) error {
 	archs := map[string]winres.Arch{
 		"amd64": winres.ArchAMD64,
 		"arm64": winres.ArchARM64,
+		"386":   winres.ArchI386,
 	}
 	targetArch, supported := archs[options.Arch]
 	if !supported {