refactor: replace custom CRM with Monica fork

app/Interfaces/Hashing.php

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+<?php
+
+namespace App\Interfaces;
+
+interface Hashing
+{
+    public function hashID();
+}

app/Interfaces/IsJournalableInterface.php

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+<?php
+
+namespace App\Interfaces;
+
+use Illuminate\Database\Eloquent\Relations\MorphOne;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+
+interface IsJournalableInterface
+{
+    /**
+     * Get all journal entries.
+     *
+     * @return MorphMany
+     */
+    public function journalEntries();
+
+    /**
+     * Get the journal record associated.
+     *
+     * @return MorphOne
+     */
+    public function journalEntry();
+
+    /**
+     * Get all the information of the Entry for the journal.
+     *
+     * @return array
+     */
+    public function getInfoForJournalEntry();
+
+    /**
+     * Delete the Journal Entry associated with the given object.
+     *
+     * @return bool
+     */
+    public function deleteJournalEntry();
+}

app/Interfaces/LabelInterface.php

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+<?php
+
+namespace App\Interfaces;
+
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+
+interface LabelInterface
+{
+    /**
+     * Get the label associated with the contact.
+     *
+     * @return BelongsToMany
+     */
+    public function labels();
+}

app/Interfaces/MailNotification.php

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+<?php
+
+namespace App\Interfaces;
+
+use App\Models\User\User;
+use Illuminate\Notifications\Messages\MailMessage;
+
+interface MailNotification
+{
+    /**
+     * Get the mail representation of the notification.
+     *
+     * @param  User  $user
+     * @return \Illuminate\Notifications\Messages\MailMessage
+     */
+    public function toMail(User $user): MailMessage;
+}