Chat相关表现&逻辑分离，新增ChatController

新增情绪机器人逻辑，
新增情绪切换视频逻辑

assets/bundles/Chat18x/ThemePanel.prefab

@@ -175,7 +175,7 @@
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+      "y": 1060,
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@@ -231,7 +231,7 @@
     "_lpos": {
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+      "y": -53.75199999999995,
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     "_lrot": {
@@ -467,7 +467,7 @@
     "_lpos": {
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-      "y": 54.803999999999995,
+      "y": -22.478999999999814,
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     "_lrot": {
@@ -508,7 +508,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 410.224609375,
-      "height": 112.39200000000001
+      "height": 93.87
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     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -549,7 +549,7 @@
     "_actualFontSize": 70,
     "_fontSize": 70,
     "_fontFamily": "NotoSans-Regular",
-    "_lineHeight": 89.2,
+    "_lineHeight": 74.5,
     "_overflow": 0,
     "_enableWrapText": true,
     "_font": null,
@@ -605,7 +605,7 @@
     "_target": null,
     "_left": 0,
     "_right": 0,
-    "_top": 0,
+    "_top": 85.54399999999981,
     "_bottom": 108.25899999999993,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
@@ -926,7 +926,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 207.47199999999998,
-      "y": -57.613000000000056,
+      "y": -105.53999999999996,
       "z": 0
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     "_lrot": {
@@ -1240,7 +1240,7 @@
     "_left": 194.1,
     "_right": 282.528,
     "_top": 0,
-    "_bottom": 53.386999999999944,
+    "_bottom": 4.460000000000036,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
     "_isAbsLeft": true,
@@ -1306,7 +1306,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
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-      "y": -58.52800000000002,
+      "y": -106.45499999999993,
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     "_lrot": {
@@ -1818,7 +1818,7 @@
     "_left": 194.1,
     "_right": 124.15300000000002,
     "_top": 0,
-    "_bottom": 52.47199999999998,
+    "_bottom": 3.5450000000000728,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
     "_isAbsLeft": true,
@@ -1871,7 +1871,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
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+      "y": -103.05000000000018,
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     "_lrot": {
@@ -1968,8 +1968,8 @@
     },
     "_lpos": {
       "__type__": "cc.Vec3",
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-      "y": -57.613000000000056,
+      "x": -400.672,
+      "y": -105.53999999999996,
       "z": 0
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     "_lrot": {
@@ -2281,9 +2281,9 @@
     "_alignFlags": 36,
     "_target": null,
     "_left": 194.1,
-    "_right": 685.4449999999999,
+    "_right": 890.672,
     "_top": 0,
-    "_bottom": 53.386999999999944,
+    "_bottom": 4.460000000000036,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,
     "_isAbsLeft": true,
@@ -2330,7 +2330,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 1080,
-      "height": 222
+      "height": 220
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -2433,8 +2433,6 @@
       "__id__": 0
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     "fileId": "43dBOZjJBF/btIjHVb4m2d",
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   {
@@ -2474,7 +2472,7 @@
     "_lpos": {
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+      "y": -110,
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     "_lrot": {
@@ -2534,7 +2532,7 @@
     "_lpos": {
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+      "y": 878.971,
       "z": 0
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     "_lrot": {
@@ -3811,6 +3809,8 @@
       "__id__": 0
     },
     "fileId": "40sHQFKzNMq51+Dtkb1mcc",
+    "instance": null,
+    "targetOverrides": null,
     "nestedPrefabInstanceRoots": null
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   {
@@ -5590,7 +5590,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 1060,
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+      "height": 1704.0195
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     "_anchorPoint": {
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@@ -5735,7 +5735,7 @@
     "_contentSize": {
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       "width": 1060,
-      "height": 1750.8195000000003
+      "height": 1704.0195
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     "_anchorPoint": {
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@@ -5888,7 +5888,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 1080,
-      "height": 2166.8
+      "height": 2120
     },
     "_anchorPoint": {
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@@ -5962,7 +5962,7 @@
     "_target": null,
     "_left": 0,
     "_right": 0,
-    "_top": 173.2,
+    "_top": 220,
     "_bottom": 0,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,