Generate notifications for cyclic dependencies to the LS client

[nipunayf]

Purpose

When there is a cyclic dependency, the project API is unable to provide compilation. Thus, the LS cannot fulfill any requests such as completions and code actions. This impacts user experience negatively, as it appears unresponsive to the user. As a solution, a notification is displayed to the user when there are cyclic dependencies.

Fixes #41111

Approach

In the same sequence of sending diagnostics to the LS client, alert the user if there is a cyclic dependency diagnostic.

Samples

Remarks

Requires adding a test to check if the notification is produced after a did change once issue #41755 is resolved.

Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (690c82e) 76.64% compared to head (4d232fd) 76.68%.
Report is 10 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #41756      +/-   ##
============================================
+ Coverage     76.64%   76.68%   +0.04%     
- Complexity    52856    52857       +1     
============================================
  Files          2881     2881              
  Lines        199262   199262              
  Branches      25906    25906              
============================================
+ Hits         152730   152811      +81     
+ Misses        38096    38008      -88     
- Partials       8436     8443       +7     

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