Add queue system with background downloading and much more (#73)

* Do not build here until it is merged.

* WIP: Queue System.

Right now crashes randomly for whatever reason..

* Animate queue spinner more slowly

* Use LightLocks to prevent crashing in the queue

(I hope it's fixed at least)

* Build nightlies in queue-system

* Use version.h for version and specify 7 digits

* Remove unneeded $(CURDIR)

I put that these for testing, but it's not needed

* Multiple Changes, see desc for more.

1.) Theme Implementation.
2.) Show Battery + Time.
3.) Some more work on Queue-System (might still be broke).
4.) Update Copyright to 2021.
5.) Add `%FIRM%` to regex.
6.) Mass Add to Queue.
7.) Search with AND / OR filter.

* Gaaah, not again...

* Remove DoNothing, some LightLock changes, etc

aka
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.

* See desc for more.

- Current Queue Entry can now be canceled.

- Fix installed list.

- Display Download Speed.

- BYE BYE Queue LightLock!

* Various adjustments to the queue menu

- Make cancel button slightly smaller
- Right align "Steps: ..." text
- Remove "Current Operation:" text
- Change KB/MB/GB to KiB/MiB/GiB
- Lots of little positioning tweaks
- Fix bug where you could get stuck in the prompt
- Make spinny thing have a ! when action is needed
- Make extracting file increment at the start instead of the end
- Delete dumb VS Code file and gitignore it

* Change to hollow full charge plugged in icon

* Fix the settings positions a bit

* Fix custom font download not having prompt

Also tweak the text positions, I forgot to change them

Co-authored-by: StackZ <47382115+SuperSaiyajinStackZ@users.noreply.github.com>

include/store/meta.hpp

@@ -1,6 +1,6 @@
 /*
 *   This file is part of Universal-Updater
-*   Copyright (C) 2019-2020 Universal-Team
+*   Copyright (C) 2019-2021 Universal-Team
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
@@ -29,6 +29,7 @@
 
 #include "json.hpp"
 #include <string>
+#include <vector>
 
 enum favoriteMarks {
 	STAR = 1 << 0,
@@ -46,15 +47,58 @@ public:
 	std::string GetUpdated(const std::string &unistoreName, const std::string &entry) const;
 	int GetMarks(const std::string &unistoreName, const std::string &entry) const;
 	bool UpdateAvailable(const std::string &unistoreName, const std::string &entry, const std::string &updated) const;
+	std::vector<std::string> GetInstalled(const std::string &unistoreName, const std::string &entry) const;
 
 	void SetUpdated(const std::string &unistoreName, const std::string &entry, const std::string &updated) {
+		if (this->metadataJson.is_discarded()) return;
 		this->metadataJson[unistoreName][entry]["updated"] = updated;
 	};
 
 	void SetMarks(const std::string &unistoreName, const std::string &entry, int marks) {
+		if (this->metadataJson.is_discarded()) return;
 		this->metadataJson[unistoreName][entry]["marks"] = marks;
 	};
 
+	/* TODO: Handle this better. */
+	void SetInstalled(const std::string &unistoreName, const std::string &entry, const std::string &name) {
+		if (this->metadataJson.is_discarded()) return;
+
+		const std::vector<std::string> installs = this->GetInstalled(unistoreName, entry);
+		bool write = true;
+
+		if (!installs.empty()) {
+			write = !installs.empty();
+
+			for (int i = 0; i < (int)installs.size(); i++) {
+				if (installs[i] == name) {
+					write = false;
+					break;
+				}
+			}
+		}
+
+		if (write) this->metadataJson[unistoreName][entry]["installed"] += name;
+	}
+
+	/* Remove installed state from a download list entry. */
+	void RemoveInstalled(const std::string &unistoreName, const std::string &entry, const std::string &name) {
+		if (this->metadataJson.is_discarded()) return;
+
+		const std::vector<std::string> installs = this->GetInstalled(unistoreName, entry);
+		int idx = -1;
+
+		if (!installs.empty()) {
+			for (int i = 0; i < (int)installs.size(); i++) {
+				if (installs[i] == name) {
+					idx = i;
+					break;
+				}
+			}
+		}
+
+		if (idx != -1) this->metadataJson[unistoreName][entry]["installed"].erase(idx);
+	}
+
 	void ImportMetadata();
 	void SaveCall();
 private: