refactor: Add more checks to pre-commit

Updated existing pre-commit hooks and added some new hooks:

- Remove trailing whitespace
- Ensure every non-empty file ends with a new line
- Check YAML file validity
- Prevent adding large files
- Ensure any scripts with shebangs are executable

Added a GitHub action to run pre-commit on every commit. Removed any
existing actions which duplicate pre-commit.

Ran pre-commit on the codebase.

.github/workflows/build.yml

@@ -131,7 +131,7 @@ jobs:
             for (const configuration of combinedUnique) {
               if (!perBoard[configuration.board])
                 perBoard[configuration.board] = [];
-              
+
               perBoard[configuration.board].push({
                 shield: configuration.shield,
                 'cmake-args': configuration['cmake-args'],
@@ -234,7 +234,7 @@ jobs:
                         };
                       }
                     } else if (hm.exposes) {
-                      return hm.exposes.flatMap(i => 
+                      return hm.exposes.flatMap(i =>
                         metadata.interconnects[i].shields.flatMap(s => boardAndShield(hm, s))
                       );
                     } else {
@@ -243,7 +243,7 @@ jobs:
                     break;
                   case "shield":
                     if (hm.features && hm.features.includes("keys")) {
-                      return hm.requires.flatMap(i => 
+                      return hm.requires.flatMap(i =>
                         metadata.interconnects[i].boards.flatMap(b => boardAndShield(b, hm))
                       );
                     } else {