[Chapel Merge] Expand the tool documentation

Branch: refs/heads/main
Revision: cb450f79b85689830bec81c518f1629f674e6d94
Author: jabraham17
Link: Expand the tool documentation by jabraham17 · Pull Request #28467 · chapel-lang/chapel · GitHub
Log Message:
Expand the tool documentation (#28467)

Expands the general tools documentation landing page and adds a separate
tools page for chpl-parallel-dbg. This tool was already documented
under debugging, so I just moved it to be under tools

[Reviewed by @DanilaFe]

Compare: Comparing 086403613ae9088c4da8bbf2188a8b360f798124...5a3b3f5cc94369651fca09058fa5cdd38810253d · chapel-lang/chapel · GitHub

Diff:
A doc/rst/tools/chpl-parallel-dbg/chpl-parallel-dbg.rst
M doc/rst/tools/index.rst
M doc/rst/tools/protoc-gen-chpl/protoc-gen-chpl.rst
M doc/rst/usingchapel/debugging/multilocale.rst
https://github.com/chapel-lang/chapel/pull/28467.diff