[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/src/definiton_providers.ts

@@ -0,0 +1,29 @@
+import * as vscode from 'vscode';
+import { getSelectedText, showStatusMessage, hideStatusMessage } from './utils';
+import { Search } from './search';
+
+export class ComponentDefinitionProvider implements vscode.DefinitionProvider {
+
+    search: Search;
+
+    constructor(search: Search) {
+        this.search = search;
+    }
+
+    /**
+     * Interface implementation to provide definition when ctrl+click on Component
+     * tag in template.
+     */
+    async provideDefinition(document: vscode.TextDocument, position: vscode.Position) {
+        const currentWord = getSelectedText(/<\/?[A-Z][a-zA-Z]+/, document, position);
+        if (!currentWord) {
+            return;
+        }
+        const componentName = currentWord.replace(/[\/<]/g, "").trim();
+
+        showStatusMessage(`Searching for component "${componentName}"`);
+        const result = await this.search.findComponent(componentName);
+        hideStatusMessage();
+        return result;
+    }
+}