Call nodes at all call sites

[kazcw]

Pull Request Description

For every Ident or PropertyAccess, there is an enclosing Call node, at the root of the tree of 0 or more App/NamedApp nodes containing the node. After this change, all method call sites (except methods invoked through binary-operator syntax) have corresponding Call nodes, and the nodes are ready to use.

Important Notes

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  TypeScript,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• Unit tests have been written where possible.
• If meaningful changes were made to logic or tests affecting Enso Cloud integration in the libraries,
  or the Snowflake database integration, a run of the Extra Tests has been scheduled.
  • If applicable, it is suggested to paste a link to a successful run of the Extra Tests.

[farmaazon]

Approving parser changes.

[JaroslavTulach]

• the intentions of call nodes seem to be good
• now when I "get them"
• let's try the approach