Save element parameters in its own database table (dont use JSON)

This makes it easier to query for specific parameters.

src/Migrations/Version20200311204104.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20200311204104 extends AbstractMigration
+{
+    public function getDescription() : string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema) : void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('CREATE TABLE parameters (id INT AUTO_INCREMENT NOT NULL, symbol VARCHAR(255) NOT NULL, value_min DOUBLE PRECISION DEFAULT NULL, value_typical DOUBLE PRECISION DEFAULT NULL, value_max DOUBLE PRECISION DEFAULT NULL, unit VARCHAR(255) NOT NULL, value_text VARCHAR(255) NOT NULL, param_group VARCHAR(255) NOT NULL, last_modified DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, datetime_added DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL, type SMALLINT NOT NULL, element_id INT NOT NULL, INDEX IDX_69348FE1F1F2A24 (element_id), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB');
+        $this->addSql('ALTER TABLE log CHANGE level level TINYINT');
+    }
+
+    public function down(Schema $schema) : void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('DROP TABLE parameters');
+        $this->addSql('ALTER TABLE log CHANGE level level TINYINT(1) DEFAULT NULL');
+    }
+}