Enhancements/big_project_mode

[worksofliam]

Changes

Project Mode for local development was disabled if the project was over a certain size due to the sheer size of memory required. Though this is normal for IDEs, IBM i developers weren't expecting it. This is because people traditionally used to developing on the server.

This PR cleans up the performance of loading projects into memory and has a way to enable Project Mode via iproj.json for specific projects. This does not affect development with members or streamfiles.

Things left to do:

• Ensure member includes continue to work for streamfiles and members
• Post merge: update docs to write about local iproj.json file.

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]

@halcyon-tech/core Hey friends! This is a big/important PR, particularly for local development, that should have no impact for developing with members or streamfiles.

I am wondering if you would mind testing the RPGLE language tools with members and streamfiles to ensure they continue to work - most importantly is making sure member resolving still works. I've tested it, and it works, but this PR adds a feature to make it so members are not resolved when the base schema is file. This is because when opening large projects, vscode-rpgle wants to index the entire project and it turns out that if you still make use of headers in QSYS or the IFS, vscode-rpgle was trying to request them all at once as it was reading every local file!!

Thanks!