feat: Adding websearch and webfetch tools

[laileni-aws]

Problem

Solution

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 70.70312% with 225 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.12%. Comparing base (0df9444) to head (1b8c845).
⚠️ Report is 27 commits behind head on feature/q-star.

Files with missing lines	Patch %	Lines
...nguage-server/agenticChat/agenticChatController.ts	7.20%	103 Missing ⚠️
...rc/language-server/agenticChat/tools/toolServer.ts	0.00%	90 Missing ⚠️
...codewhisperer/src/shared/streamingClientService.ts	15.38%	22 Missing ⚠️
.../src/language-server/agenticChat/tools/webFetch.ts	97.44%	9 Missing ⚠️
...src/language-server/agenticChat/tools/webSearch.ts	99.45%	1 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##           feature/q-star    #2756      +/-   ##
==================================================
+ Coverage           57.98%   58.12%   +0.14%     
==================================================
  Files                 281      283       +2     
  Lines               70729    71497     +768     
  Branches             4250     4331      +81     
==================================================
+ Hits                41012    41559     +547     
- Misses              29631    29852     +221     
  Partials               86       86              

Flag	Coverage Δ
unittests	58.12% <70.70%> (+0.14%)	⬆️

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