Warn about Pulseq 1.5.0 support gap

[cncastillo]

Summary

• warn when loading Pulseq files at or above v1.5.0, pointing to PR Read Pulseq 1.5.1 #614 for progress
• store and compare Pulseq versions using Julia’s VersionNumber instead of encoded integers
• bump KomaMRIFiles to v0.9.5 for the warning and version-handling update

Closes #555
Closes #174

Disclaimer: This PR is an experiment of using coding agents to solve trivial issues. Everything here was written by Codex CLI.

[codecov]

Codecov Report

❌ Patch coverage is 91.30435% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.09%. Comparing base (5169ddb) to head (70c1b9f).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
KomaMRIFiles/src/Sequence/Pulseq.jl	91.30%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #635   +/-   ##
=======================================
  Coverage   90.09%   90.09%           
=======================================
  Files          57       57           
  Lines        3230     3230           
=======================================
  Hits         2910     2910           
  Misses        320      320           

Flag	Coverage Δ
base	88.94% <ø> (ø)
core	89.73% <ø> (ø)
files	94.05% <91.30%> (ø)
komamri	88.21% <ø> (ø)
plots	90.90% <ø> (ø)

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

Files with missing lines	Coverage Δ
KomaMRIFiles/src/Sequence/Pulseq.jl	93.84% <91.30%> (ø)

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