Report when each phase starts

[pmachapman]

A part of sillsdev/serval#805.

This stores the times that each phase starts as a user property for retrieval by Serval.

For example:

---

This change is 

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.77%. Comparing base (423f81d) to head (1f932d2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #249   +/-   ##
=======================================
  Coverage   90.77%   90.77%           
=======================================
  Files         352      352           
  Lines       22290    22294    +4     
=======================================
+ Hits        20234    20238    +4     
  Misses       2056     2056           

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[Enkidu93]

(Rerunning the CI builds that failed. Sometimes they're running out of space the last couple weeks, but usually succeed when re-run.)

@Enkidu93 reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @pmachapman)

[ddaspit]

@ddaspit reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @pmachapman)