pkg(mono-6.12.0): filename fixes (#230)

* pkg(mono-6.12.0): filename fixes

* pkg(mono-6.12.0): compile cs files

* pkg(mono-6.12.0): add provides in metadata

packages/mono/6.12.0/compile

@@ -1,3 +1,4 @@
 #!/bin/bash
 
-csc "$@"
+rename 's/$/\.cs/' "$@" # Add .cs extension
+csc -out:out *.cs

packages/mono/6.12.0/environment

@@ -1 +1 @@
-export PATH=$PWD/mono-6.12.0:$PATH
+export PATH=$PWD/bin:$PATH

packages/mono/6.12.0/metadata.json

@@ -1,5 +1,10 @@
 {
     "language": "mono",
     "version": "6.12.0",
-    "aliases": ["csharp", "cs"]
+    "provides": [
+        {
+            "language": "csharp",
+            "aliases": ["mono", "mono-csharp", "mono-c#", "mono-cs", "c#", "cs"]
+        }
+    ]
 }

packages/mono/6.12.0/run

@@ -1,5 +1,4 @@
 #!/bin/bash
 
-CODE=${1/cs/exe}
 shift
-mono $CODE "$@"
+mono out "$@"