[skip ci] Miscellaneous scripting QoL improvements and fixes (#2740)

* Update CI to detect the word "skipci"

* Make script compilation errors more verbose

Rather than just giving the line in which the error has been found, return the actual text content of the line itself

* Attempt to bubble up errors in the script chain, so it says the reason for any NotRun errors.

The exception message gets eaten up when the script is running, and an exception happens.

Also put in a default result message for the CmdResult, instead of having it default to null.

* Trim the whitespace off returned script compilation error line

.github/workflows/build-and-release.yml

@@ -200,7 +200,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: true
-    if: ${{ !contains(github.event.head_commit.message, 'skip')}}
+    if: ${{ !contains(github.event.head_commit.message, 'skip') || !contains(github.event.head_commit.message, 'skipci')}}
     steps:
       - name: dummy action
         run: "echo 'dummy action that checks if the build is to be skipped, if it is, this action does not run to break the entire build action'"