chunk: add checksum for cache files

[SandyXSD]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2626 (c0508c6) into main (cdccfe8) will decrease coverage by 0.10%.
The diff coverage is 79.16%.

@@            Coverage Diff             @@
##             main    #2626      +/-   ##
==========================================
- Coverage   59.58%   59.48%   -0.11%     
==========================================
  Files         138      138              
  Lines       23626    23718      +92     
==========================================
+ Hits        14077    14108      +31     
- Misses       7716     7770      +54     
- Partials     1833     1840       +7     

Impacted Files	Coverage Δ
pkg/chunk/cached_store.go	73.61% <50.00%> (-0.60%)	⬇️
pkg/chunk/disk_cache.go	75.00% <79.76%> (-3.21%)	⬇️
cmd/flags.go	93.96% <100.00%> (+0.15%)	⬆️
cmd/mount.go	60.49% <100.00%> (+0.12%)	⬆️
pkg/chunk/mem_cache.go	62.50% <0.00%> (-23.62%)	⬇️
pkg/vfs/reader.go	74.78% <0.00%> (-3.58%)	⬇️
pkg/meta/sql.go	63.95% <0.00%> (ø)
pkg/fs/fs.go	76.57% <0.00%> (+0.84%)	⬆️
... and 2 more

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

No Coverage information
0.0% Duplication