Codegen exclude decorator

[Anaethelion]

This adds a @codegen_exclude decorator only for requests that will translate into an optional boolean in the metamodel's Endpoint.

This also comes with a new eslint rule to avoid using the decorator outside of requests.

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

No changes detected.

You can validate these APIs yourself by using the make validate target.

[MattDevy]

LGTM!

Added a very minor suggestion that's a little outside the scope of this change

Edit to add: ignore previous suggestion, I forgot Javascript automatically falls through unless you use break :D

[JoshMock]

LGTM!

Should we add a tracking conformance issue to ensure all clients respect the new decorator?

[Anaethelion]

LGTM!

Should we add a tracking conformance issue to ensure all clients respect the new decorator?

That will be the topic of a future discussion!

[github-actions]

The backport to 8.19 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-8.19 8.19
# Navigate to the new working tree
cd .worktrees/backport-8.19
# Create a new branch
git switch --create backport-5800-to-8.19
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 9e6143bdb6cf3824a3867fd4ec881b043a893862
# Push it to GitHub
git push --set-upstream origin backport-5800-to-8.19
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-8.19

Then, create a pull request where the base branch is 8.19 and the compare/head branch is backport-5800-to-8.19.

[github-actions]

The backport to 9.1 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-9.1 9.1
# Navigate to the new working tree
cd .worktrees/backport-9.1
# Create a new branch
git switch --create backport-5800-to-9.1
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 9e6143bdb6cf3824a3867fd4ec881b043a893862
# Push it to GitHub
git push --set-upstream origin backport-5800-to-9.1
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.1

Then, create a pull request where the base branch is 9.1 and the compare/head branch is backport-5800-to-9.1.

[github-actions]

The backport to 9.2 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-9.2 9.2
# Navigate to the new working tree
cd .worktrees/backport-9.2
# Create a new branch
git switch --create backport-5800-to-9.2
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 9e6143bdb6cf3824a3867fd4ec881b043a893862
# Push it to GitHub
git push --set-upstream origin backport-5800-to-9.2
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.2

Then, create a pull request where the base branch is 9.2 and the compare/head branch is backport-5800-to-9.2.

[MattDevy]

LGTM!

Should we add a tracking conformance issue to ensure all clients respect the new decorator?

Done for Go generator :) https://github.com/elastic/elastic-client-generator-go/commit/575420ee6db8ebdc05b1aa45ab215ed54d4a05cd