fix(bm): Board Manager install will fail on Windows (espressif#10533)

* fix(bm): Board Manager install will fail on Windows

On some Windows installations, Board Manager will fail to install the RC2 core, because it could not find esptool for the given OS.

* fix(package): EspTool for Mac is only ARM64 version

cc: @lucasssvaz

Author: me-no-dev

package/package_esp32_index.template.json

@@ -484,12 +484,19 @@
               "size": "45868720"
             },
             {
-              "host": "x86_64-apple-darwin",
+              "host": "arm64-apple-darwin",
               "url": "https://github.com/espressif/arduino-esp32/releases/download/3.1.0-RC1/esptool-v4.8.1-macos.tar.gz",
               "archiveFileName": "esptool-v4.8.1-macos.tar.gz",
               "checksum": "SHA-256:6e1fc5ea04490e849c925c48d5cee590164fcf9b9bd419a7b014c2fb48a13743",
               "size": "29828542"
             },
+            {
+              "host": "i686-mingw32",
+              "url": "https://github.com/espressif/arduino-esp32/releases/download/3.1.0-RC1/esptool-v4.8.1-win64.zip",
+              "archiveFileName": "esptool-v4.8.1-win64.zip",
+              "checksum": "SHA-256:3e97fb990fdd721b923b478eaaa046967c7919dbc9cbd04c445307571177918a",
+              "size": "33612728"
+            },
             {
               "host": "x86_64-mingw32",
               "url": "https://github.com/espressif/arduino-esp32/releases/download/3.1.0-RC1/esptool-v4.8.1-win64.zip",