Better error messages for schema validation

[PollRobots]

Description

This adds more informative error messages for some common schema validation errors.

This detects capitalization errors and small edit distance errors in attribute names and adjusts the error messages accordingly. If there is no close match to an attribute name, then the valid attribute names at that node in the schema are listed

Examples:

• {"Name": "project"... -> project is missing a 'name' attribute, found 'Name' instead
• ..."rutnime": "test"... -> project is missing a 'runtime' attribute, found 'rutnime'. instead
• ..."template": {"displayNameDisplayName": "foo"... -> 'displayNameDisplayName' not allowed, the expected attributes are 'config', 'description', 'displayName', 'important', 'metadata' and 'quickstart'

Fixes # (issue)

Checklist

• I have run make tidy to update any new dependencies
• I have run make lint to verify my code passes the lint check
  • I have formatted my code using gofumpt

• I have added tests that prove my fix is effective or that my feature works

• I have run make changelog and committed the changelog/pending/<file> documenting my change

• Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version

[pulumi-bot]

Changelog

[uncommitted] (2024-05-01)

Features

• [sdk/go] Make project validation error messages more helpful.
  #16097