[ADD] owl-vision: vscode extension initial commit

Owl Vision is a vscode extension that improves owl developpement by adding
syntax highlights in templates and commands to easly navigate between
components and templates.

It also adds a Component snippet.

Commands:

* `Owl Vision: Find Template`:
    - If the cursor is on a template name, finds the corresponding template.
    - If the cursor is on a component, finds the template of the selected component.
* `Owl Vision: Find Component`: Finds the selected component definition.
* `Owl Vision: Switch`: Finds the corresponding template or component
    depending on the current file.
* `Owl Vision: Switch Besides`: Finds the corresponding template or component
    depending on the current file and opens it besides.

Settings:

* `owl-vision.js.include`: Javascript files to include in search.
* `owl-vision.js.exclude`: Javascript files to exclude in search.
* `owl-vision.xml.include`: XML files to include in search.
* `owl-vision.xml.exclude`: XML files to exclude in search.

tools/owl-vision/.vscode/launch.json

@@ -0,0 +1,30 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run Extension",
+            "type": "extensionHost",
+            "request": "launch",
+            "args": [
+                "--extensionDevelopmentPath=${workspaceFolder}"
+            ],
+            "outFiles": [
+                "${workspaceFolder}/out/**/*.js"
+            ],
+            "preLaunchTask": "${defaultBuildTask}"
+        },
+        {
+            "name": "Extension Tests",
+            "type": "extensionHost",
+            "request": "launch",
+            "args": [
+                "--extensionDevelopmentPath=${workspaceFolder}",
+                "--extensionTestsPath=${workspaceFolder}/out/test/suite/index"
+            ],
+            "outFiles": [
+                "${workspaceFolder}/out/test/**/*.js"
+            ],
+            "preLaunchTask": "${defaultBuildTask}"
+        }
+    ]
+}