build: add tsc type checking in the ci/test pipeline

This commit introduces TypeScript checks and generates type declarations
for the existing JavaScript codebase using `tsc` prior to running the linter task.

Ref: #9
Signed-off-by: Lance Ball <[email protected]>

Author: lance

.gitignore

@@ -5,6 +5,9 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 
+# Generated typedefs
+*.d.ts
+
 # Runtime data
 pids
 *.pid