Help: Improve wording and structure related to preset includes

Encourage placing preset includes near the beginning of a preset
file and ensure the example shows that usage. Move the prose
discussing includes to its own section to improve discoverability
and break up paragraphs to make each main point harder to miss.

Also clarify ${sourceDir} to remove any ambiguity with regard to
its meaning in included files.

Issue: #23214

1 files changed, 3 insertions, 0 deletions

diff --git a/Tests/RunCMake/CMakePresets/otherThings.json.in b/Tests/RunCMake/CMakePresets/otherThings.json.in
new file mode 100644
index 0000000..61a2092
--- /dev/null
+++ b/Tests/RunCMake/CMakePresets/otherThings.json.in
@@ -0,0 +1,3 @@
+{
+  "version": 1
+}