Use gersemi for CMake formatting (#257)

* Replace `cmake-format` with `gersemi`

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

* Remove .cmake-format.yaml

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

* Update workflow to use gersemi

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

* Update CONTRIBUTING.md

* Update helper scripts

* Don't include `*/external/*` in workflows

---------

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

[ROCm/rocprofiler-systems commit: 122623a929]

projects/rocprofiler-systems/.gersemirc

@@ -0,0 +1,5 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/BlankSpruce/gersemi/0.19.3/gersemi/configuration.schema.json
+
+warn_about_unknown_commands: false
+indent: 4
+line_length: 90