Add .gql and .graphqls extensions for GraphQL icon

[anilsenay]

There are .gql and .graphqls suffix support in GraphQL VSCode extension. I use those file extensions in my projects, hence I wanted them to be graphql icons.

Release Notes:

• Added GraphQL icon for .gql and .graphqls files.

currently:

after this pr:

in vscode:

[maxdeviant]

Is .graphqls a standard GraphQL extension?

[anilsenay]

Is .graphqls a standard GraphQL extension?

Actually I am not sure if it is a standard but I saw it in several docs:

• https://the-guild.dev/graphql/tools/docs/schema-merging#file-loading
• https://www.apollographql.com/docs/kotlin/essentials/file-types/
• also in here as i mentioned before: https://marketplace.visualstudio.com/items?itemName=GraphQL.vscode-graphql-syntax

[maxdeviant]

Thank you!