feat: add session impl (#6254)

yarn.lock

@@ -697,6 +697,7 @@ __metadata:
     "@types/keyv": "npm:^4.2.0"
     "@types/lodash-es": "npm:^4.17.12"
     "@types/mixpanel": "npm:^2.14.8"
+    "@types/mustache": "npm:^4"
     "@types/node": "npm:^20.11.20"
     "@types/nodemailer": "npm:^6.4.14"
     "@types/on-headers": "npm:^1.0.3"
@@ -720,6 +721,7 @@ __metadata:
     keyv: "npm:^4.5.4"
     lodash-es: "npm:^4.17.21"
     mixpanel: "npm:^0.18.0"
+    mustache: "npm:^4.2.0"
     nanoid: "npm:^5.0.6"
     nest-commander: "npm:^3.12.5"
     nestjs-throttler-storage-redis: "npm:^0.4.1"
@@ -738,6 +740,7 @@ __metadata:
     socket.io: "npm:^4.7.4"
     stripe: "npm:^14.18.0"
     supertest: "npm:^6.3.4"
+    tiktoken: "npm:^1.0.13"
     ts-node: "npm:^10.9.2"
     typescript: "npm:^5.3.3"
     ws: "npm:^8.16.0"
@@ -14489,6 +14492,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/mustache@npm:^4":
+  version: 4.2.5
+  resolution: "@types/mustache@npm:4.2.5"
+  checksum: 10/29581027fe420120ae0591e28d44209d0e01adf5175910d03401327777ee9c649a1508e2aa63147c782c7e53fcea4b69b5f9a2fbedcadc5500561d1161ae5ded
+  languageName: node
+  linkType: hard
+
 "@types/mute-stream@npm:^0.0.4":
   version: 0.0.4
   resolution: "@types/mute-stream@npm:0.0.4"
@@ -33968,6 +33978,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"tiktoken@npm:^1.0.13":
+  version: 1.0.13
+  resolution: "tiktoken@npm:1.0.13"
+  checksum: 10/4217ffbcd4126dc2dd17503fda35be91cf4be64c514f70e1049982d1bd2b5cea6334e76812411cb284dfa7b412159839d546048ac98220faf3c629e217266ddc
+  languageName: node
+  linkType: hard
+
 "time-zone@npm:^1.0.0":
   version: 1.0.0
   resolution: "time-zone@npm:1.0.0"