feat: add organization allowlist and denylist filters, enhance changelog loading, and improve fetch functions

- Introduced orgAllowlist and orgDenylist properties to filter organizations during fetching.
- Enhanced loadChangelogFromRepo to check multiple potential changelog file names.
- Updated fetchTags to return a map of tag names associated with their SHAs.
- Improved pagination logic in fetchAllOrganizations and fetchRepositoriesForOrg to handle larger datasets.
- Added retry logic in fetchFunction to handle rate limiting and server errors more gracefully.
- Modified ITag interface to include an optional name property for better tag handling.

ts/interfaces/index.ts

@@ -22,6 +22,7 @@ export interface ICommit {
 }
 
 export interface ITag {
+  name?: string;
   commit?: {
     sha?: string;
   };