Add 3dtrees forestmamba (#1898) #4697

Job	Run time
Setup cache and determine changed repositories (3.11)	5m 47s
Lint R scripts (ubuntu-24.04, release)	1m 32s
Lint tool-list (3.11)	41s
Test tools (0, 3.11)	8m 32s
Check file sizes	0s
Lint Python scripts	0s
Combine chunked test results (3.11)	43s
Deploy (3.11)	59s
Check workflow success	-1s
Report deploy status	4s
	18m 17s

Provide feedback