feat: wire up a global constants file with package version

[Hweinstock]

Problem

The package version is not wired up into telemetry or logging.

Solution

• define a constants.ts at the top level, import the package.json and extract the version.

Notes

originally thought this wouldn't work on bun executable, but it does! It appears to pull the file in to the executable.

Testing

Ran 3 commands, one from a node build bun run build, one from dev bun run start, and one from exec ./dist/bin/agentcore-linux-x64 . All three produced logs with the correct version number.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.98%. Comparing base (bb14e85) to head (8406a6f).

Additional details and impacted files

@@            Coverage Diff            @@
##           refactor    #1881   +/-   ##
=========================================
  Coverage     95.97%   95.98%           
=========================================
  Files           208      209    +1     
  Lines          9674     9677    +3     
=========================================
+ Hits           9285     9288    +3     
  Misses          389      389           

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[tejaskash]

LGTM