feat(users): Incorporate themes in user APIs

[ThisIsMani]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

• This PR will introduce theme context in user APIs and email related APIs.
  • The User APIs which are affected are
    1. User Info
    2. Invite
    3. Resend Invite
    4. Reset Password
    5. Connect Account
    6. Signup with merchant id
  • Non User flows
    1. Request for Recon
    2. Recon merchant update
    3. API Key expiry reminder

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

Closes #6780

How did you test it?

1. User Info API will send theme_id in the response if a theme exists in your lineage.

   curl --location 'http://localhost:8080/user' \
   --header 'Cookie: login_token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoiMzAwMjAwN2UtZWE3NC00NzVlLWJmNWQtMzYxNzIwNTk4YzA3IiwibWVyY2hhbnRfaWQiOiJtZXJjaGFudF8xNzMzNDkyMzU3Iiwicm9sZV9pZCI6Im9yZ19hZG1pbiIsImV4cCI6MTczMzY2NTMzOSwib3JnX2lkIjoib3JnX3Z5VDVDb3BEdnpPT3g5V211TTdMIiwicHJvZmlsZV9pZCI6InByb180cHE4ZVVFREJDc1YyaDN5Mk9iSSIsInRlbmFudF9pZCI6InB1YmxpYyJ9.YsKkaY8aFDWz_1CLrZEZWNxmO2rSCk-yTe77OmHP_ZE'
   

   {
       "merchant_id": "merchant_1733492357",
       "name": "name",
       "email": "email",
       "verification_days_left": null,
       "role_id": "org_admin",
       "org_id": "org_vyT5CopDvzOOx9WmuM7L",
       "is_two_factor_auth_setup": false,
       "recovery_codes_left": null,
       "profile_id": "pro_4pq8eUEDBCsV2h3y2ObI",
       "entity_type": "organization",
       "theme_id": "7792a4e5-bd7c-498d-8478-c4e0a9a0a984"
   }

2. All the other user specific APIs mentioned above will have theme_id in the return URL and also accept theme_id in the request.
3. Other flows will reflect the email themes once the email templates are changed to use the theme data.

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/router/src/routes/user.rs	63% smaller
crates/api_models/src/user/theme.rs	58% smaller
crates/diesel_models/src/user/theme.rs	28% smaller
crates/router/src/configs/settings.rs	27% smaller
crates/router/src/core/user/dashboard_metadata.rs	24% smaller
crates/router/src/services/email/types.rs	22% smaller
crates/router/src/core/user.rs	18% smaller
crates/router/src/core/recon.rs	9% smaller
crates/router/src/utils/user/theme.rs	6% smaller
crates/common_utils/src/types/theme.rs	3% smaller
crates/diesel_models/src/query/user/theme.rs	1% smaller
crates/router/src/workflows/api_key_expiry.rs	1% smaller
config/config.example.toml	Unsupported file format
config/deployments/env_specific.toml	Unsupported file format
config/development.toml	Unsupported file format
config/docker_compose.toml	Unsupported file format
crates/api_models/src/user.rs	0% smaller
crates/diesel_models/src/schema.rs	0% smaller
crates/diesel_models/src/schema_v2.rs	0% smaller
crates/router/src/configs/secrets_transformers.rs	0% smaller
crates/router/src/core/errors/user.rs	0% smaller
crates/router/src/core/user/theme.rs	0% smaller
crates/router/src/db/kafka_store.rs	0% smaller
crates/router/src/db/user/theme.rs	0% smaller
crates/router/src/routes/app.rs	0% smaller
migrations/2024-12-05-131123_add-email-theme-data-in-themes/down.sql	Unsupported file format
migrations/2024-12-05-131123_add-email-theme-data-in-themes/up.sql	Unsupported file format

[apoorvdixit88]

Is it a backward compatible change?

[ThisIsMani]

Yeah, I kept the old configs as well.