fix: create instance disk size error and adjust user define disk device name

[whybeyoung]

this pr do theses things.

1. fix create root volume size not working.
2. user define root/data in Disk.Name rather than Disk.Type , user should not care about deviceName like /dev/xvda or /dev/sdb , they should be generated in the code
3. add some basic schema validation option: for example, supported 10 disk per machine check, volumeType enums check. disk Type enums check... etc

[codecov]

Codecov Report

Base: 67.71% // Head: 67.71% // No change to project coverage 👍

Coverage data is based on head (4fa1457) compared to base (0aedab5).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2179   +/-   ##
=======================================
  Coverage   67.71%   67.71%           
=======================================
  Files           6        6           
  Lines         508      508           
=======================================
  Hits          344      344           
  Misses        137      137           
  Partials       27       27           

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