feat: add user_secrets table (#19162)

Closes https://github.com/coder/internal/issues/780

## Summary of changes:
- added `user_secrets` table
- `user_secrets` table contains `env_name` and `file_path` fields which
are not used at the moment, but will be used in later PRs
- `user_secrets` table doesn't contain `value_key_id`, I will add it in
a separate migration in a dbcrypt PR
- on one hand I don't want to add fields which are not used (because
it's a risk smth may change in implementation later), on the other hand
I don't want to add too many migrations for user secrets table
- added unique sql indexes
- added sql queries for CRUD operations on user-secrets
- introduced new `ResourceUserSecret` resource
- basic unit-tests for CRUD ops and authorization behavior
- Role updates:
  - owner:
    - remove `ResourceUserSecret` from site-wide perms
    - add `ResourceUserSecret` to user-wide perms
   - orgAdmin
- remove `ResourceUserSecret` from org-wide perms; seems it's not
strictly required, because `ResourceUserSecret` is not tied to
organization in dbauthz wrappers?
   - memberRole
- no need to change memberRole because it implicitly has access to
user-secrets thanks to the `allPermsExcept`
   - is it enough changes to roles?
   
Main questions:
- [ ] We will have 2 migrations for user-secrets:
  - initial migration (in current PR)
  - adding `value_key_id` in dbcrypt PR
  - is this approach reasonable?
- [ ] Are changes to roles's permissions are correct?
- [ ] Are changes in roles_test.go are correct?

---------

Co-authored-by: Steven Masley <Emyrk@users.noreply.github.com>

coderd/database/querier.go

@@ -71,6 +71,7 @@ type sqlcQuerier interface {
 	// Prebuild considered in-progress if it's in the "starting", "stopping", or "deleting" state.
 	CountInProgressPrebuilds(ctx context.Context) ([]CountInProgressPrebuildsRow, error)
 	CountUnreadInboxNotificationsByUserID(ctx context.Context, userID uuid.UUID) (int64, error)
+	CreateUserSecret(ctx context.Context, arg CreateUserSecretParams) (UserSecret, error)
 	CustomRoles(ctx context.Context, arg CustomRolesParams) ([]CustomRole, error)
 	DeleteAPIKeyByID(ctx context.Context, id string) error
 	DeleteAPIKeysByUserID(ctx context.Context, userID uuid.UUID) error
@@ -118,6 +119,7 @@ type sqlcQuerier interface {
 	DeleteTailnetClientSubscription(ctx context.Context, arg DeleteTailnetClientSubscriptionParams) error
 	DeleteTailnetPeer(ctx context.Context, arg DeleteTailnetPeerParams) (DeleteTailnetPeerRow, error)
 	DeleteTailnetTunnel(ctx context.Context, arg DeleteTailnetTunnelParams) (DeleteTailnetTunnelRow, error)
+	DeleteUserSecret(ctx context.Context, id uuid.UUID) error
 	DeleteWebpushSubscriptionByUserIDAndEndpoint(ctx context.Context, arg DeleteWebpushSubscriptionByUserIDAndEndpointParams) error
 	DeleteWebpushSubscriptions(ctx context.Context, ids []uuid.UUID) error
 	DeleteWorkspaceAgentPortShare(ctx context.Context, arg DeleteWorkspaceAgentPortShareParams) error
@@ -383,6 +385,8 @@ type sqlcQuerier interface {
 	GetUserLinkByUserIDLoginType(ctx context.Context, arg GetUserLinkByUserIDLoginTypeParams) (UserLink, error)
 	GetUserLinksByUserID(ctx context.Context, userID uuid.UUID) ([]UserLink, error)
 	GetUserNotificationPreferences(ctx context.Context, userID uuid.UUID) ([]NotificationPreference, error)
+	GetUserSecret(ctx context.Context, id uuid.UUID) (UserSecret, error)
+	GetUserSecretByUserIDAndName(ctx context.Context, arg GetUserSecretByUserIDAndNameParams) (UserSecret, error)
 	// GetUserStatusCounts returns the count of users in each status over time.
 	// The time range is inclusively defined by the start_time and end_time parameters.
 	//
@@ -546,6 +550,7 @@ type sqlcQuerier interface {
 	InsertWorkspaceResourceMetadata(ctx context.Context, arg InsertWorkspaceResourceMetadataParams) ([]WorkspaceResourceMetadatum, error)
 	ListProvisionerKeysByOrganization(ctx context.Context, organizationID uuid.UUID) ([]ProvisionerKey, error)
 	ListProvisionerKeysByOrganizationExcludeReserved(ctx context.Context, organizationID uuid.UUID) ([]ProvisionerKey, error)
+	ListUserSecrets(ctx context.Context, userID uuid.UUID) ([]UserSecret, error)
 	ListWorkspaceAgentPortShares(ctx context.Context, workspaceID uuid.UUID) ([]WorkspaceAgentPortShare, error)
 	MarkAllInboxNotificationsAsRead(ctx context.Context, arg MarkAllInboxNotificationsAsReadParams) error
 	OIDCClaimFieldValues(ctx context.Context, arg OIDCClaimFieldValuesParams) ([]string, error)
@@ -621,6 +626,7 @@ type sqlcQuerier interface {
 	UpdateUserProfile(ctx context.Context, arg UpdateUserProfileParams) (User, error)
 	UpdateUserQuietHoursSchedule(ctx context.Context, arg UpdateUserQuietHoursScheduleParams) (User, error)
 	UpdateUserRoles(ctx context.Context, arg UpdateUserRolesParams) (User, error)
+	UpdateUserSecret(ctx context.Context, arg UpdateUserSecretParams) (UserSecret, error)
 	UpdateUserStatus(ctx context.Context, arg UpdateUserStatusParams) (User, error)
 	UpdateUserTerminalFont(ctx context.Context, arg UpdateUserTerminalFontParams) (UserConfig, error)
 	UpdateUserThemePreference(ctx context.Context, arg UpdateUserThemePreferenceParams) (UserConfig, error)