Display 'Subroutine' keyword in full-free

[sebCIL]

Changes

Display 'Subroutine' keyword in full-free.

Checklist

• have tested my change
• updated relevant documentation
• Remove any/all console.logs I added
• eslint is not complaining
• have added myself to the contributors' list in the README
• for feature PRs: PR only includes one feature enhancement.

[worksofliam]

I like this change, but I don't believe it should be added in parser.js.

Instead, you should just append the keyword when looping though .subroutines in the language providers.

Here for example: https://github.com/halcyon-tech/vscode-rpgle/blob/6a7914c5497660f8eeb25cfee7c3583d8bcef49c/server/src/providers/documentSymbols.ts#L53

[sebCIL]

In fixed format, the keyword is added in parser.js :
https://github.com/halcyon-tech/vscode-rpgle/blob/6a7914c5497660f8eeb25cfee7c3583d8bcef49c/server/src/language/parser.js#L946
So I do the same.

[worksofliam]

@sebCIL Good point! Thanks!