Add fish artwork and Sunfish species

fish/species/bluegill/bluegill.tres

@@ -3,12 +3,12 @@
 [ext_resource type="Script" path="res://fish/fish_data.gd" id="1_fish_data"]
 [ext_resource type="Resource" path="res://fishing/common_catch_profile.tres" id="2_profile"]
 [ext_resource type="Resource" path="res://fish/default_availability.tres" id="3_availability"]
-[ext_resource type="Texture2D" path="res://fish/species/bluegill/bluegill.svg" id="4_texture"]
+[ext_resource type="Texture2D" path="res://fish/species/bluegill/fish_bluegill.png" id="4_texture"]
 
 [resource]
 script = ExtResource("1_fish_data")
 id = &"bluegill"
-display_name = "Bluegill"
+display_name = "bluegill"
 rarity = 0
 base_catch_weight = 10.0
 catch_profile = ExtResource("2_profile")

fish/species/bluegill/fish_bluegill.png.import

@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bwsl8862rf2vs"
+path="res://.godot/imported/fish_bluegill.png-2307d25b88382e057d2259e28f2f89aa.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://fish/species/bluegill/fish_bluegill.png"
+dest_files=["res://.godot/imported/fish_bluegill.png-2307d25b88382e057d2259e28f2f89aa.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1