Add initial project backend structure with Docker support and configuration files. Added some useful features such as async requests, automatically adding card by message from chat etc

Signed-off-by: Dmitrii <computer@yawaflua.tech>

Took 9 minutes

src/backend/.dockerignore

@@ -0,0 +1,25 @@
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/.idea
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md