Localize Web Views

**Describe the solution you'd like**

The html web views should switch from hard-coded strings to localized strings.

Examples: [Lambda](https://github.com/aws/aws-toolkit-vscode/blob/master/src/lambda/templates/lambdaTemplates.ts), [Feedback](https://github.com/aws/aws-toolkit-vscode/blob/master/src/feedback/templates/feedbackTemplates.ts)

Start by reading src/lambda/templates/lambdaTemplates.ts and src/feedback/templates/feedbackTemplates.ts to identify the hard-coded strings in the HTML web views. Trace the repository's existing localization usage, then verify that the web views display localized strings throughout the affected templates without changing their behavior.

Written by the indexing model from the issue text.