- Refactor constant definitions and organization
- Clean up package level variables and functions
- Introduce new `relaymode` and `apitype` packages for constant definitions
- Refactor and simplify code in several packages including `openai`, `relay/channel/baidu`, `relay/util`, `relay/controller`, `relay/channeltype`
- Add helper functions in `relay/channeltype` package to convert channel type constants to corresponding API type constants
- Remove deprecated functions such as `ResponseText2Usage` from `relay/channel/openai/helper.go`
- Modify code in `relay/util/validation.go` and related files to use new `validator.ValidateTextRequest` function
- Rename `util` package to `relaymode` and update related imports in several packages
- Update the minimum access token length from 16 to 32
- Prevent spam by introducing policies and detecting user agents
- Add an authorization header to the login response
- Use base64 to decode the session secret and generate a random one if not set
- Remove prefix "laisky-" from the variable "key" in [middleware/auth.go]
- Modify error message from "用户已被封禁" to "用户已被禁用" in [middleware/auth.go]
- Remove check for "consumeQuota" when request URL starts with "/v1/models" in [middleware/auth.go]
- Add ability for admin users to set "channelId" in context in [middleware/auth.go]
- Update URL and key for `ama` and `opencat` links, and key format for `url` in links in [web/src/components/TokensTable.js]
- Update URL for `nextUrl` in [web/src/components/TokensTable.js]
- Change variable names and improve search function for token names in [web/src/components/TokensTable.js]
- Add delete confirmation popup, copy and open link buttons, sorting functionality for column header, and loading state in [web/src/components/TokensTable.js]
- Update pagination to load more data in [web/src/components/TokensTable.js]
- Update rendering of token information, including quota and timestamp in [web/src/components/TokensTable.js]
