Add mIRC latest (#10091)

* Add mIRC 7.64

* Fix download URL for mIRC and switch to "latest" versioning scheme

* Add InstallerSuccessCodes: 1223

Co-authored-by: chausner <chausner@users.noreply.github.com>

manifests/m/mIRC/mIRC/latest/mIRC.mIRC.yaml

@@ -0,0 +1,31 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.singleton.1.0.0.schema.json
+PackageIdentifier: mIRC.mIRC
+PackageVersion: latest
+PackageName: mIRC
+PackageUrl: https://www.mirc.com/
+Publisher: mIRC Co. Ltd.
+PublisherUrl: https://www.mirc.com/
+PublisherSupportUrl: https://www.mirc.com/help.html
+PrivacyUrl: https://www.mirc.com/privacy.html
+License: Proprietary
+LicenseUrl: https://www.mirc.com/eula.html
+Copyright: Copyright © 1995-2021 mIRC Co. Ltd.
+ShortDescription: IRC (Internet Relay Chat) client
+Description: >
+  mIRC is a popular Internet Relay Chat client used by individuals and organizations to
+  communicate, share, play and work with each other on IRC networks around the world. Serving the
+  Internet community for over two decades, mIRC has evolved into a powerful, reliable and fun
+  piece of technology.
+Tags:
+  - chat
+  - IRC
+Installers:
+- Architecture: x86
+  InstallerUrl: https://www.mirc.com/get.php
+  InstallerSha256: CC2C74DA138DAFEB3E6EB48706DD607DDAF01A5767FCEEB7B1B6F5F67D606D55
+  InstallerType: nullsoft
+  InstallerSuccessCodes:
+    - 1223
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0