GH-1795 add terminal launch option to use a specific Minecraft profile

Used like this:
```
./MultiMC --launch 1.17.1 --profile MultiMCTest --server mc.hypixel.net
```

2 files changed, 11 insertions, 0 deletions

diff --git a/launcher/minecraft/auth/AccountList.cpp b/launcher/minecraft/auth/AccountList.cpp
index 76af0ac0..a76cac55 100644
--- a/launcher/minecraft/auth/AccountList.cpp
+++ b/launcher/minecraft/auth/AccountList.cpp
@@ -47,6 +47,16 @@ int AccountList::findAccountByProfileId(const QString& profileId) const {
     return -1;
 }
 
+MinecraftAccountPtr AccountList::getAccountByProfileName(const QString& profileName) const {
+    for (int i = 0; i < count(); i++) {
+        MinecraftAccountPtr account = at(i);
+        if (account->profileName() == profileName) {
+            return account;
+        }
+    }
+    return nullptr;
+}
+
 const MinecraftAccountPtr AccountList::at(int i) const
 {
     return MinecraftAccountPtr(m_accounts.at(i));
diff --git a/launcher/minecraft/auth/AccountList.h b/launcher/minecraft/auth/AccountList.h
index ed08bb1d..e275eb17 100644
--- a/launcher/minecraft/auth/AccountList.h
+++ b/launcher/minecraft/auth/AccountList.h
@@ -62,6 +62,7 @@ public:
     void addAccount(const MinecraftAccountPtr account);
     void removeAccount(QModelIndex index);
     int findAccountByProfileId(const QString &profileId) const;
+    MinecraftAccountPtr getAccountByProfileName(const QString &profileName) const;
 
     /*!
      * Sets the path to load/save the list file from/to.