Support built-in forecast function through UDTF for tree model

[ycycse]

As title. It's similar to forecast table function in table model

[codecov]

Codecov Report

Attention: Patch coverage is 1.57480% with 125 lines in your changes missing coverage. Please review.

Project coverage is 39.10%. Comparing base (c28e50f) to head (e6766e7).
Report is 29 commits behind head on master.

Files with missing lines	Patch %	Lines
...he/iotdb/db/queryengine/plan/udf/UDTFForecast.java	0.00%	125 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #15682      +/-   ##
============================================
- Coverage     39.18%   39.10%   -0.08%     
  Complexity      198      198              
============================================
  Files          4834     4836       +2     
  Lines        313766   314354     +588     
  Branches      39376    39422      +46     
============================================
- Hits         122949   122939      -10     
- Misses       190817   191415     +598     

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[sonarqubecloud]

Quality Gate passed

Issues
30 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud