Shrink published Rust debug info

[Porges]

I noticed these were getting very big and impacting our CI time due to copying huge artifacts. Presumably this would be slowing down copying in the live environment as well.

Two changes have been made:

• Use debug=1 instead of debug=true (equivalent to debug=2); this should be sufficient for our needs
• On Linux, compress debug information after building

Binary	Before	with debug=1	after compression
onefuzz-agent (Linux)	170 MB	83 MB	30 MB
onefuzz-task (Linux)	284 MB	134 MB	46 MB
onefuzz_agent.pdb (Windows)	89 MB	42 MB	—
onefuzz_task.pdb (Windows)	150 MB	63 MB	—
onefuzz-deployment.zip	364 MB	286 MB	285 MB

Overall the compressed release-artifacts reduced from 374 → 297 MB.

Build speed improvements (latest build on main vs this PR):

Step	Before	After
agent upload-artifact	26s/32s/45s	16s/15s/20s
package download-artifact	1m 57s	26 s
package upload-artifact	2m 8s	1m 35s

[codecov-commenter]

Codecov Report

Merging #3247 (65c405c) into main (042fc24) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3247   +/-   ##
=======================================
  Coverage   29.65%   29.65%           
=======================================
  Files         332      332           
  Lines       39290    39290           
=======================================
  Hits        11651    11651           
  Misses      27639    27639