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 68.01347% with 95 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.79%. Comparing base (499f48f) to head (161c219).
⚠️ Report is 42 commits behind head on main.

Files with missing lines	Patch %	Lines
...ins/memory/dynamicpolicy/state/state_checkpoint.go	55.55%	18 Missing and 6 partials ⚠️
...gent/qrm-plugins/network/state/state_checkpoint.go	60.37%	15 Missing and 6 partials ⚠️
...lugins/cpu/dynamicpolicy/state/state_checkpoint.go	61.22%	14 Missing and 5 partials ⚠️
.../util/qrmcheckpointmanager/qrmcheckpointmanager.go	77.77%	9 Missing and 9 partials ⚠️
.../options/qrm/statedirectory/statedirectory_base.go	52.63%	9 Missing ⚠️
cmd/katalyst-agent/app/options/qrm/qrm_base.go	25.00%	2 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   59.65%   59.79%   +0.13%     
==========================================
  Files         682      684       +2     
  Lines       63929    64165     +236     
==========================================
+ Hits        38137    38366     +229     
+ Misses      21385    21372      -13     
- Partials     4407     4427      +20     

Flag	Coverage Δ
unittest	59.79% <68.01%> (+0.13%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.