discoverer: Enhance printed information when not verbose

Basically print information about media tracks making without tags nor buffers in caps making still quite small but containing all information infos.

Stop making 'Topology' section and just print the info

before:

Topology:
  container: MPEG-2 Transport Stream
    audio: AC-3 (ATSC A/52)
    video: H.264 (High Profile)

Properties:
  Duration: 0:00:05.512394259
  Seekable: yes
  Live: no
  Tags:
      audio codec: AC-3 (ATSC A/52)
      bitrate: 192000
      video codec: H.264 (High Profile)
      minimum bitrate: 12947
      maximum bitrate: 12947

After:

Properties:
  Duration: 0:00:05.512394259
  Seekable: yes
  Live: no
  container: MPEG-2 Transport Stream
    audio: AC-3 (ATSC A/52)
      Stream ID: b076403d73e0c5fc13985832e8d585945603993437ba14b0799f422f9495e8ef:1/00001100
      Language: <unknown>
      Channels: 2 (front-left, front-right)
      Sample rate: 48000
      Depth: 32
      Bitrate: 192000
      Max bitrate: 0
    video: H.264 (High Profile)
      Stream ID: b076403d73e0c5fc13985832e8d585945603993437ba14b0799f422f9495e8ef:1/00001011
      Width: 1920
      Height: 1080
      Depth: 24
      Frame rate: 30000/1001
      Pixel aspect ratio: 1/1
      Interlaced: true
      Bitrate: 10363396
      Max bitrate: 12947