vmstat: implement --disk --disk-sum --partition

[Bluemangoo]

This PR implemented --disk(-d), --disk-sum(-D), --partition <device>(-p).

So far, all the features of vmstat on Linux have been implemented.

$ cargo run -q vmstat -d && echo '\n' && vmstat -d
disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
nvme0n1  87787    629 15882401   47181 756219  25189 60103306 1911481      0    246
loop0      0      0       0       0      0      0       0       0      0      0
loop1      0      0       0       0      0      0       0       0      0      0
loop2      0      0       0       0      0      0       0       0      0      0
loop3      0      0       0       0      0      0       0       0      0      0
loop4      0      0       0       0      0      0       0       0      0      0
loop5      0      0       0       0      0      0       0       0      0      0
loop6      0      0       0       0      0      0       0       0      0      0
loop7      0      0       0       0      0      0       0       0      0      0


disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
nvme0n1  87787    629 15882401   47181 756219  25189 60103306 1911481      0    246
loop0      0      0       0       0      0      0       0       0      0      0
loop1      0      0       0       0      0      0       0       0      0      0
loop2      0      0       0       0      0      0       0       0      0      0
loop3      0      0       0       0      0      0       0       0      0      0
loop4      0      0       0       0      0      0       0       0      0      0
loop5      0      0       0       0      0      0       0       0      0      0
loop6      0      0       0       0      0      0       0       0      0      0
loop7      0      0       0       0      0      0       0       0      0      0

$ cargo run -q vmstat -D && echo '\n' && vmstat -D
            9 disks
            8 partitions
        87789 total reads
          629 merged reads
     15884129 read sectors
        47191 milli reading
       757487 writes
        25206 merged writes
     60175450 written sectors
      1921462 milli writing
            0 in progress IO
          247 milli spent IO
         1997 milli weighted IO


            9 disks
            8 partitions
        87789 total reads
          629 merged reads
     15884129 read sectors
        47191 milli reading
       757487 writes
        25206 merged writes
     60175450 written sectors
      1921462 milli writing
            0 inprogress IO
          247 milli spent IO
         1997 milli weighted IO

$ cargo run -q vmstat -p nvme0n1 && echo '\n' && vmstat -p nvme0n1 
nvme0n1         reads      read sectors      writes  requested writes
                87789          15884129      759103          60263578


nvme0n1         reads      read sectors      writes  requested writes
                87789          15884129      759103          60263578
$ cargo run -q vmstat -p nvme0n1p5 && echo '\n' && vmstat -p nvme0n1p5
nvme0n1p5       reads      read sectors      writes  requested writes
                31133            444776           0                 0


nvme0n1p5       reads      read sectors      writes  requested writes
                31133            444776           0                 0

[cakebaker]

So far, all the features of vmstat on Linux have been implemented.

Kudos, good work!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (6a64f1b) to head (19a1c37).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff     @@
##   main   #477   +/-   ##
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