Add DOSBox-X (#4126)

* Add DOSBox-X to the community repository

* Fix extension being .yml instead of .yaml

manifests/joncampbell123/DOSBox-X/0.83.6.yaml

@@ -0,0 +1,26 @@
+Id: joncampbell123.DOSBox-X
+Publisher: joncampbell123
+Author: John Campbell
+Name: DOSBox-X
+Version: 0.83.6
+License: GPL-2.0 License
+LicenseUrl: https://github.com/joncampbell123/dosbox-x/blob/master/COPYING
+AppMoniker: dosbox-x
+Description: >
+  DOSBox-X emulates a PC necessary for running many DOS games and applications that simply cannot
+  be run on modern PCs and operating systems, similar to DOSBox.
+  It retains compatibility with the wide base of DOS games and DOS gaming DOSBox was designed for.
+  But it is also a platform for running DOS applications, including emulating the environments to
+  run Windows 3.x, 9x and ME and software written for those versions of Windows and NEC PC-98
+  emulations.
+Homepage: https://dosbox-x.com/
+Tags: dosbox, fork, emulator
+Commands: dosbox-x
+InstallerType: Inno
+Switches:
+  InstallLocation: /DIR=<INSTALLPATH>
+Installers:
+  - Arch: x86
+    Url: https://github.com/joncampbell123/dosbox-x/releases/download/dosbox-x-v0.83.6/dosbox-x-windows-0.83.6-setup.exe
+    Sha256: 2dd12410fa53ba7c91e9814bbc2bb34bb739f49e8b8e34277f85f546dbedf5ab
+ManifestVersion: 0.1.0