feat: Blink funding source (#2477)

* feat: Blink funding source

* chore: make bundle

* Blink review 01 (#2575)

* refactor: mark `graphql_query` as private (`_` prefix)

* feat: set default value for `blink_api_endpoint`

* fix: raise if HTTP call failed

* refactor: move private method to the bottom

* refactor: make `wallet_id` a property

* fix: key mapping for attribute

* chore: fix `mypy`

* chore: fix `make check`

* refactor: extract query strings

* refactor: extract `BlinkGrafqlQueries` class

* chore: code clean-up

* chore: add `try-catch`

* refactor: extract `tx_query`

* chore: format grapfhql queries

* fix: set funding source class

* chore: `make format`

* fix: test by following the other patterns

* Update docs/guide/wallets.md

Co-authored-by: openoms <43343391+openoms@users.noreply.github.com>

* feat: add websocket connection to blink (#2577)

* feat: add websocket connection to blink

* feat: close websocket on shutdown

* feat: add `blink_ws_endpoint` to the UI

* fix: use `SEND` tx for `settlementFee`

* refactor: remove `else` when `if` has `return`

* fix: remove test env file

---------

Co-authored-by: bitkarrot <73979971+bitkarrot@users.noreply.github.com>
Co-authored-by: Vlad Stan <stan.v.vlad@gmail.com>
Co-authored-by: openoms <43343391+openoms@users.noreply.github.com>

lnbits/settings.py

@@ -218,6 +218,12 @@ class LnPayFundingSource(LNbitsSettings):
     lnpay_admin_key: Optional[str] = Field(default=None)
 
 
+class BlinkFundingSource(LNbitsSettings):
+    blink_api_endpoint: Optional[str] = Field(default="https://api.blink.sv/graphql")
+    blink_ws_endpoint: Optional[str] = Field(default="wss://ws.blink.sv/graphql")
+    blink_token: Optional[str] = Field(default=None)
+
+
 class ZBDFundingSource(LNbitsSettings):
     zbd_api_endpoint: Optional[str] = Field(default="https://api.zebedee.io/v0/")
     zbd_api_key: Optional[str] = Field(default=None)
@@ -266,6 +272,7 @@ class FundingSourcesSettings(
     LndRestFundingSource,
     LndGrpcFundingSource,
     LnPayFundingSource,
+    BlinkFundingSource,
     AlbyFundingSource,
     ZBDFundingSource,
     PhoenixdFundingSource,
@@ -415,14 +422,15 @@ class SuperUserSettings(LNbitsSettings):
     lnbits_allowed_funding_sources: list[str] = Field(
         default=[
             "AlbyWallet",
-            "FakeWallet",
+            "BlinkWallet",
             "CoreLightningRestWallet",
             "CoreLightningWallet",
             "EclairWallet",
-            "LNbitsWallet",
-            "LndRestWallet",
+            "FakeWallet",
             "LNPayWallet",
+            "LNbitsWallet",
             "LnTipsWallet",
+            "LndRestWallet",
             "LndWallet",
             "OpenNodeWallet",
             "PhoenixdWallet",