Add a system metric to refer the filesystem's inodes usage

[rogercoll]

Area(s)

area:system

Is your change request related to a problem? Please describe.

Standardize the hostmetrics receiver metric related to the filesystem inodes usage: https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/receiver/hostmetricsreceiver/internal/scraper/filesystemscraper/metadata.yaml#L40

Describe the solution you'd like

Metric name: system.filesystem.inodes.usage Attributes:

  - system.device
  - system.filesystem.state
  - system.filesystem.type
  - system.filesystem.mode
  - system.filesystem.mountpoint

Describe alternatives you've considered

No response

Additional context

No response