[TIMOB-28070] TiAPI: Add vscode json files to app templates

*Summary:* We should add .vscode/ JSON configuration files to our Titanium app templates which hide the generated folders (like the "build" folder) and suggest VS Code users to use our extension. *Classic App Folder Exclusion:* For Classic apps, we only need to hide the ./build folder from the editor and exclude it from file monitoring/search. .vscode/settings.json

{
	"files.exclude": {
		"build/": true
	},
	"search.exclude": {
		"build/": true
	},
	"files.watcherExclude": {
		"build/": true
	},
}

*Alloy/Angular App Folder Exclusion:* For all other app templates, the project's root ./i18n, ./platform, and ./Resources folders are generated from the project's ./app folder. So, these folders need to be excluded as well. .vscode/settings.json

{
	"files.exclude": {
		"build/": true,
		"i18n/": true,
		"platform/": true,
		"Resources/": true
	},
	"search.exclude": {
		"build/": true,
		"i18n/": true,
		"platform/": true,
		"Resources/": true
	},
	"files.watcherExclude": {
		"build/": true,
		"i18n/": true,
		"platform/": true,
		"Resources/": true
	}
}

*Promoting Titanium's Extension:* When opening the app project folder in VS Code, we can have the editor recommend the end-user to use our Titanium extension by adding the following JSON file. .vscode/extensions.json

{
	"recommendations": [
		"axway.vscode-titanium"
	]
}