Add View AST Command to text editor where appropriate

Also, hide the `CodeQL: Run Queries` command inside of zip folders
since we do not allow queries to be in archives. I wish we could be more
specific about when to show that command, eg- only *.ql files and
directories, but I couldn't find a way to restrict a command to only
appear on directories.

extensions/ql-vscode/CHANGELOG.md

@@ -12,6 +12,7 @@
 - Avoid error dialogs when QL test discovery or database cleanup encounters a missing directory. [#706](https://github.com/github/vscode-codeql/pull/706)
 - Add descriptive text and a link in the results view. [#711](https://github.com/github/vscode-codeql/pull/711)
 - Fix the _Set Label_ command in the query history view. [#710](https://github.com/github/vscode-codeql/pull/710)
+- Add the _CodeQL: View AST_ directly to text editors of files in database archives. [#712](https://github.com/github/vscode-codeql/pull/712)
 
 ## 1.3.7 - 24 November 2020
 

extensions/ql-vscode/package.json

@@ -526,7 +526,8 @@
         },
         {
           "command": "codeQL.runQueries",
-          "group": "9_qlCommands"
+          "group": "9_qlCommands",
+          "when": "resourceScheme != codeql-zip-archive"
         }
       ],
       "commandPalette": [
@@ -656,6 +657,10 @@
           "command": "codeQL.runQuery",
           "when": "editorLangId == ql && resourceExtname == .ql"
         },
+        {
+          "command": "codeQL.viewAst",
+          "when": "resourceScheme == codeql-zip-archive"
+        },
         {
           "command": "codeQL.quickEval",
           "when": "editorLangId == ql"