Normalize whitespace in source files

Ensure that no source files have trailing whitespace at end of lines and ensure that all files end with a single trailing newline.

This also adds Github Actions to enforce whitespace conventions.

src-ui/src/app/data/filter-rule.ts

@@ -6,7 +6,7 @@ export function cloneFilterRules(filterRules: FilterRule[]): FilterRule[] {
     for (let rule of filterRules) {
       newRules.push({rule_type: rule.rule_type, value: rule.value})
     }
-    return newRules      
+    return newRules
   } else {
     return null
   }
@@ -19,4 +19,4 @@ export function isFullTextFilterRule(filterRules: FilterRule[]): boolean {
 export interface FilterRule {
   rule_type: number
   value: string
-}
+}

src-ui/src/app/data/paperless-correspondent.ts

@@ -1,7 +1,7 @@
 import { MatchingModel } from './matching-model';
 
 export interface PaperlessCorrespondent extends MatchingModel {
-  
+
   last_correspondence?: Date
 
 }

src-ui/src/app/data/paperless-document-metadata.ts

@@ -1,5 +1,5 @@
 export interface PaperlessDocumentMetadata {
-    
+
   original_checksum?: string
 
   archived_checksum?: string
@@ -10,4 +10,4 @@ export interface PaperlessDocumentMetadata {
 
   has_archive_version?: boolean
 
-}
+}

src-ui/src/app/data/paperless-document-suggestions.ts

@@ -6,4 +6,4 @@ export interface PaperlessDocumentSuggestions {
 
   document_types?: number[]
 
-}
+}

src-ui/src/app/data/paperless-saved-view.ts

@@ -15,4 +15,4 @@ export interface PaperlessSavedView extends ObjectWithId {
 
   filter_rules: FilterRule[]
 
-}
+}

src-ui/src/app/data/results.ts

@@ -3,5 +3,5 @@ export interface Results<T> {
   count: number
 
   results: T[]
-  
+
 }

src-ui/src/app/data/websocket-consumer-status-message.ts

@@ -8,4 +8,4 @@ export interface WebsocketConsumerStatusMessage {
   message?: string
   document_id: number
 
-}
+}