Fix Double quotes does not trigger the autocomplete

[N1ebieski]

Fixes laravel/vs-code-extension#339

If a last character is a double quote, for example:

{{ config("

then Microsoft\PhpParser\Parser::parseSourceFile returns autocompletingIndex: 1 instead 0. Example:

php-parser autocomplete "{{ config(\"" --debug

returns:

================================================================================
================================================================================
                              STARTING TO PARSE
================================================================================
================================================================================

Microsoft\PhpParser\Node\SourceFileNode {{ config("
+ Context: App\Contexts\Base
* Parsing: App\Parsers\SourceFileNodeParser

 Microsoft\PhpParser\Node\Statement\InlineHtml {{ config("
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\InlineHtmlParser


================================================================================
================================================================================
                              STARTING TO PARSE
================================================================================
================================================================================

Microsoft\PhpParser\Node\SourceFileNode <?php config(";
+ Context: App\Contexts\Base
* Parsing: App\Parsers\SourceFileNodeParser

 Microsoft\PhpParser\Node\Statement\InlineHtml <?php 
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\InlineHtmlParser

 Microsoft\PhpParser\Node\Statement\ExpressionStatement config(";
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\ExpressionStatementParser

  Microsoft\PhpParser\Node\Expression\CallExpression config(";
  + Context: App\Contexts\MethodCall
  * Parsing: App\Parsers\CallExpressionParser

   Microsoft\PhpParser\Node\QualifiedName config
   Microsoft\PhpParser\Node\DelimitedList\ArgumentExpressionList ";
   + Context: App\Contexts\MethodCall
   * Parsing: App\Parsers\ArgumentExpressionListParser

    Microsoft\PhpParser\Node\Expression\ArgumentExpression ";
    + Context: App\Contexts\Argument
    * Parsing: App\Parsers\ArgumentExpressionParser

     Microsoft\PhpParser\Node\StringLiteral ";
     + Context: App\Contexts\StringValue
     * Parsing: App\Parsers\StringLiteralParser

{
    "type": "methodCall",
    "autocompleting": true,
    "methodName": "config",
    "className": null,
    "arguments": {
        "type": "arguments",
        "autocompletingIndex": 1,
        "children": [
            {
                "type": "argument",
                "name": null,
                "children": [
                    {
                        "type": "string",
                        "value": ";"
                    }
                ]
            }
        ]
    },
    "parent": {
        "type": "base",
        "parent": null
    }
}

Comparison with a "single quote" example:

php-parser autocomplete "{{ config('" --debug

returns:

================================================================================
================================================================================
                              STARTING TO PARSE
================================================================================
================================================================================

Microsoft\PhpParser\Node\SourceFileNode {{ config('
+ Context: App\Contexts\Base
* Parsing: App\Parsers\SourceFileNodeParser

 Microsoft\PhpParser\Node\Statement\InlineHtml {{ config('
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\InlineHtmlParser


================================================================================
================================================================================
                              STARTING TO PARSE
================================================================================
================================================================================

Microsoft\PhpParser\Node\SourceFileNode <?php config(';
+ Context: App\Contexts\Base
* Parsing: App\Parsers\SourceFileNodeParser

 Microsoft\PhpParser\Node\Statement\InlineHtml <?php 
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\InlineHtmlParser

 Microsoft\PhpParser\Node\Statement\ExpressionStatement config(
 + Context: App\Contexts\Base
 * Parsing: App\Parsers\ExpressionStatementParser

  Microsoft\PhpParser\Node\Expression\CallExpression config(
  + Context: App\Contexts\MethodCall
  * Parsing: App\Parsers\CallExpressionParser

   Microsoft\PhpParser\Node\QualifiedName config
{
    "type": "methodCall",
    "autocompleting": true,
    "methodName": "config",
    "className": null,
    "arguments": {
        "type": "arguments",
        "autocompletingIndex": 0,
        "children": []
    },
    "parent": {
        "type": "base",
        "parent": null
    }
}

Probably the parser turns the string into something like this:

"{{ config(";"

and returns ";" as an argument.

This PR adds an extra check that the last character is a double quote. If so, replace it with a single quote.