add filter option based on freeform_tags

[valkiriaaquatica]

SUMMARY
This change helps the user to filter when listing snapshots based on the freeform_tags values of the snapshots. With this change the user doesen't need to 1 List all the snapshots 2 Filter for the snapshots they want based on the freeform_tags values.

ISSUE TYPE

• Feature request in module

COMPONENT NAME

• oci_blockstorage_boot_volume_backup_facts

ADDITIONAL INFORMATION

Before when a user wanted to jsut get the snapshots that have certains values in their freeform tags they had to do this:
Before

- name: List boot_volume_backups
  oci_blockstorage_boot_volume_backup_facts:
    compartment_id: "ocid1.compartment.oc1..xxxxxxEXAMPLExxxxxx"
    register: backups

- name: Filter snapshots based on their tags
   set_fact:
      filtered_backups: "{{ backups.boot_volume_backups | json_query(query) }}"
    vars:
      query: "[?freeform_tags.department== 'biology']"

AFTER

- name: List all boot volume bakcups that match the freeform tags
    oracle.oci.oci_blockstorage_boot_volume_backup_facts:
    compartment_id: "ocid1.compartment.oc1..xxxxxxEXAMPLExxxxxx"
    freeform_tags_filter:
        department: biology
   register: backups