Add provides = time-daemon to deb metadata

[mcpherrinm]

In Debian and Ubuntu, time-daemon is provided/conflict/replace by all of chrony, ntpsec, openntpd, systemd-timesyncd

This helps to ensure there's not multiple fighting NTP implementations, and allows other packages to depend on having NTP generically.

Having ntpd-rs provide it eases switching them out and keeping dependencies satisfied.

[mcpherrinm]

https://pkgs.org/search/?q=time-daemon&on=provides

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.41%. Comparing base (a46f34b) to head (a5e583f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1817   +/-   ##
=======================================
  Coverage   81.40%   81.41%           
=======================================
  Files          68       68           
  Lines       21610    21610           
=======================================
+ Hits        17592    17594    +2     
+ Misses       4018     4016    -2     

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[mcpherrinm]

Manual testing on a Debian Bookworm host shows it correct swaps out chrony:

ntpd-rs$ sudo apt install /home/mattm/code/ntpd-rs/target/debian/ntpd-rs_1.4.0-1_amd64.deb
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'ntpd-rs' instead of '/home/mattm/code/ntpd-rs/target/debian/ntpd-rs_1.4.0-1_amd64.deb'
The following packages will be REMOVED:
  chrony
The following packages will be upgraded:
  ntpd-rs
1 upgraded, 0 newly installed, 1 to remove and 61 not upgraded.
Need to get 0 B/17.9 MB of archives.
After this operation, 653 kB disk space will be freed.
Do you want to continue? [Y/n] Y
Get:1 /home/mattm/code/ntpd-rs/target/debian/ntpd-rs_1.4.0-1_amd64.deb ntpd-rs amd64 1.4.0-1 [17.9 MB]
Reading changelogs... Done
(Reading database ... 68819 files and directories currently installed.)
Removing chrony (4.3-2+deb12u1) ...
(Reading database ... 68787 files and directories currently installed.)
Preparing to unpack .../ntpd-rs_1.4.0-1_amd64.deb ...
Unpacking ntpd-rs (1.4.0-1) over (1.4.0-1) ...
Setting up ntpd-rs (1.4.0-1) ...
ntpd-rs-metrics.service is a disabled or a static unit not running, not starting it.
Processing triggers for man-db (2.11.2-2) ...