Remove duplicate assets from SignalShareExtension and consolidate resizable imagesets

- SignalShareExtension was embedding its own copy of Images.xcassets and Symbols.xcassets,
  duplicating assets already in the main app bundle
- Use Bundle.app extension to load images from the containing app instead
- Delete *-resizable imagesets (group, person, note, number, invite) which were
  byte-for-byte identical copies of their base imagesets with the same Contents.json
- Update code references to use base imageset names instead of -resizable variants

Reduces app bundle size by ~10MB.

Author: jsj

Signal.xcodeproj/project.pbxproj

@@ -298,7 +298,6 @@
 		3470C8822559B23F00F5847C /* CVUpdate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3470C8812559B23F00F5847C /* CVUpdate.swift */; };
 		3471211025ED5F910037CD1F /* PaymentsReconciliationTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3471210E25ED5F850037CD1F /* PaymentsReconciliationTest.swift */; };
 		347342F72548587900D440CD /* ConversationViewController+BottomBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = 347342F62548587800D440CD /* ConversationViewController+BottomBar.swift */; };
-		3478504C1FD7496D007B8332 /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = B66DBF4919D5BBC8006EA940 /* Images.xcassets */; };
 		347850571FD86544007B8332 /* SAEFailedViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 347850561FD86544007B8332 /* SAEFailedViewController.swift */; };
 		34798A8725AF965300EC89B4 /* ProfileBioViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 34798A8625AF965300EC89B4 /* ProfileBioViewController.swift */; };
 		3479D6B226A762E200811069 /* ChatListViewController+Reminders.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3479D6B126A762E200811069 /* ChatListViewController+Reminders.swift */; };
@@ -1437,7 +1436,6 @@
 		766035A9286CE4CB00F6B71C /* MediaTopBar.swift in Sources */ = {isa = PBXBuildFile; fileRef = 766035A8286CE4CB00F6B71C /* MediaTopBar.swift */; };
 		76616C9D2A266A05005F7001 /* WindowManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 76616C9C2A266A05005F7001 /* WindowManager.swift */; };
 		7665BC9D2A3A72910060279B /* Symbols.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 7665BC9C2A3A72910060279B /* Symbols.xcassets */; };
-		7665BC9E2A3A72910060279B /* Symbols.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 7665BC9C2A3A72910060279B /* Symbols.xcassets */; };
 		7666D54428331E1100A3BDB9 /* ImageEditorViewController+Draw.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7666D54328331E1100A3BDB9 /* ImageEditorViewController+Draw.swift */; };
 		7666D54628331E4800A3BDB9 /* ImageEditorViewController+Blur.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7666D54528331E4800A3BDB9 /* ImageEditorViewController+Blur.swift */; };
 		7666D54828331E6900A3BDB9 /* ImageEditorViewController+Text.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7666D54728331E6900A3BDB9 /* ImageEditorViewController+Text.swift */; };
@@ -15192,9 +15190,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				3478504C1FD7496D007B8332 /* Images.xcassets in Resources */,
 				5010526B2BDB23F50097DDC5 /* PrivacyInfo.xcprivacy in Resources */,
-				7665BC9E2A3A72910060279B /* Symbols.xcassets in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

Signal/ConversationView/Components/CVComponentThreadDetails.swift

@@ -1049,7 +1049,7 @@ extension CVComponentThreadDetails {
 
         let membersAttributedText = NSAttributedString.composed(of: [
             NSAttributedString.with(
-                image: UIImage(named: "group-resizable")!,
+                image: UIImage(named: "group")!,
                 font: Self.mutualGroupsFont
             ),
             "  ",
@@ -1199,7 +1199,7 @@ extension CVComponentThreadDetails {
             detailsText: phoneNumberString,
             mutualGroupsText: NSAttributedString.composed(of: [
                 NSAttributedString.with(
-                    image: UIImage(named: "group-resizable")!,
+                    image: UIImage(named: "group")!,
                     font: Self.mutualGroupsFont
                 ),
                 "  ",