Add multi manifest for R 4.0.4 (#10283)

* Add multi manifest for R 4.0.4

* Change publisher URL

* identifier is sensible to case

* Use upper P everywhere

* rename files

manifests/r/RProject/R/4.0.4/RProject.R.installer.yaml

@@ -0,0 +1,18 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: RProject.R
+PackageVersion: 4.0.4
+MinimumOSVersion: 10.0.0.0
+InstallModes:
+  - interactive
+  - silent
+  - silentWithProgress
+Installers:
+  - Architecture: x64
+    InstallerType: inno
+    InstallerUrl: https://cloud.r-project.org/bin/windows/base/old/4.0.4/R-4.0.4-win.exe
+    InstallerSha256: AC1679BF1AE90EA8899263C1C99E8D84DA04739414EA6E51CAD1CB111E8FF112
+    InstallerLocale: en-US
+    UpgradeBehavior: install
+ManifestType: installer
+ManifestVersion: 1.0.0
+