Allow execution of operations without schema

## Actual Behavior
When executing query from within the source code file, I get the error:

```
Error: graphql operation failed t: File '/Volumes/Code/portfolio-tracker-fe/src/App.js' doesn't match any project
```

## Expected Behavior

Execute graphql query correctly.

## Steps to Reproduce the Problem Or Description

1. `npx create-react-app example-react-app && cd example-react-app`
2. `npm i grapqhl-request graphql`
3. add following config to the root of the project (notice I am not defining a schema, because I have no schema files in the project)

```
{
"documents": "src/**/*.{graphql,js,ts,jsx,tsx}",
"extension": {
"endpoints": {
"default": "http://localhost:3001/graphql"
}
}
}

```
4. modify `App.js` to include

```
import { gql } from 'graphql-request';
const query = gql`
{
SomeType {
someField
}
}
`;
```
5. Try executing the query

## Specifications

- GraphQL for VSCode Extension Version: v0.3.41
- VSCode Version: 1.63.0 Commit: 7db1a2b88f7557e0a43fec75b6ba7e50b3e9f77e
- OS Name: macOS
- OS Version: 12.0.1
- graphql config filename and format example: graphql.config.json (see above for content)

## Logs Of TS Server || GraphQL Language Service

```
Error: graphql operation failed
t: File '[...]/example-react-app/src/App.js' doesn't match any project
```