[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/.eslintrc.json

@@ -0,0 +1,24 @@
+{
+    "root": true,
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 6,
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+        "@typescript-eslint/naming-convention": "warn",
+        "@typescript-eslint/semi": "warn",
+        "curly": "warn",
+        "eqeqeq": "warn",
+        "no-throw-literal": "warn",
+        "semi": "off"
+    },
+    "ignorePatterns": [
+        "out",
+        "dist",
+        "**/*.d.ts"
+    ]
+}