Implemented the character class and created 'heroes class' hierarchy (closes #60)

server/entities/characters/Class1/class1.gd

+extends "res://entities/characters/player.gd"
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	# Modification for this character
+	maxJump = 3
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	pass
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