Added support for multiple templates in each language or a default template, resolved crlf line issues along with a fixing script, fixed misspellings, and revised user guide.

[1unarzDev]

Feature Overview

• You may now add the field cph.general.templatePaths with the ability to add multiple templates with a label and path.
• When opening a new problem, if you have a default language selected, the menu of templates for that given language is shown immediately. Otherwise, you must first select a language, then the corresponding menu of templates for that language is shown.
• If the user hasn't defined any templates, they will simply get a blank file.
• If there is only one defined template for a given language, this template will be opened automatically without input.

"cph.general.templatePaths": {
    "cpp": [
        {
            "label": "Template Name 1",
            "path": "<path-to-your-cpp-template>"
        },
        {
            "label": "Template Name 2",
            "path": "<path-to-your-cpp-template>"
        }
    ],
    "java": [
        {
            "label": "Default Java Template",
            "path": "<path-to-your-java-template>"
        }
    ]
}

I apologize if I have done anything incorrectly, this is my first time contributing to a project that I"m not heavily involved in. The main goal I had in mind was to add support for using templates in multiple languages. I am currently practicing for USACO and have been using CF heavily, but my larger, more comprehensive template that I've been using is not competition legal because prewritten code is illegal. As a result, I decided that I want to primarily use a stripped down smaller template while practicing, and use the larger template for CF competitions. All features have been fully tested, and I passed all the required tests.