feat(state): allow storing of state in tmpfs instead of disk

[JustinChengLZ]

What type of PR is this?

Some machines have bad disk performance so we can provide the option to store in memory (tmpfs). We need to ensure that when we want to store state in memory, we migrate the old state file from disk to memory.

What this PR does / why we need it:

Which issue(s) this PR fixes:

Special notes for your reviewer:

[codecov]

Codecov Report

❌ Patch coverage is 67.21763% with 119 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.68%. Comparing base (221a24d) to head (b8ad643).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...ins/memory/dynamicpolicy/state/state_checkpoint.go	56.25%	22 Missing and 6 partials ⚠️
.../util/qrmcheckpointmanager/qrmcheckpointmanager.go	74.03%	18 Missing and 9 partials ⚠️
...gent/qrm-plugins/network/state/state_checkpoint.go	60.31%	19 Missing and 6 partials ⚠️
...lugins/cpu/dynamicpolicy/state/state_checkpoint.go	59.32%	19 Missing and 5 partials ⚠️
.../options/qrm/statedirectory/statedirectory_base.go	52.38%	10 Missing ⚠️
cmd/katalyst-agent/app/options/qrm/qrm_base.go	20.00%	3 Missing and 1 partial ⚠️
pkg/agent/qrm-plugins/cpu/nativepolicy/policy.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #961      +/-   ##
==========================================
+ Coverage   58.61%   58.68%   +0.07%     
==========================================
  Files         678      680       +2     
  Lines       76623    76939     +316     
==========================================
+ Hits        44909    45151     +242     
- Misses      27385    27433      +48     
- Partials     4329     4355      +26     

Flag	Coverage Δ
unittest	58.68% <67.21%> (+0.07%)	⬆️

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