feat: parse uds_bundle_metadata resource

[catsby]

Description

This PR adds to the tfparser to extract the bundle metadata from the uds_bundle_metadata resource, defined like so:

resource "uds_bundle_metadata" "basic" {
  kind        = "UDSBundle"
  version     = "0.1.0"
  description = "This is a basic bundle"
}

NOTE: also fix an issue where the parser would panic if something it thought was required was missing (ex version in the required_providers block)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Test, docs, adr added or updated as needed
• Contributor Guide Steps followed

[YrrepNoj]

LGTM