feat: Adds support for telegram contact sharing (#10841)

# Pull Request Template

## Description

This PR adds support for displaying shared contacts in a Telegram
channel.

**NB:** Tested with both old and new bubbles. 
Multiple numbers for a single contact are not supported at this time,
but multiple contacts are supported.
In the future, we can add support for displaying contact names as well.

## Type of change

- [x] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

**Loom video**

https://www.loom.com/share/95efadace3194887bc0663c53e7c08bc?sid=a5c27176-3dd8-456c-80b9-c63dbb89dca1


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

spec/services/telegram/incoming_message_service_spec.rb

@@ -309,5 +309,22 @@ describe Telegram::IncomingMessageService do
         expect(telegram_channel.inbox.messages.first.content).to eq('Option 1')
       end
     end
+
+    context 'when valid contact message params' do
+      it 'creates appropriate conversations, message and contacts' do
+        params = {
+          'update_id' => 2_342_342_343_242,
+          'message' => {
+            'contact': {
+              'phone_number': '+918660944581'
+            }
+          }.merge(message_params)
+        }.with_indifferent_access
+        described_class.new(inbox: telegram_channel.inbox, params: params).perform
+        expect(telegram_channel.inbox.conversations.count).not_to eq(0)
+        expect(Contact.all.first.name).to eq('Sojan Jose')
+        expect(telegram_channel.inbox.messages.first.attachments.first.file_type).to eq('contact')
+      end
+    end
   end
 end