feat: farcaster staging models (#1320)

* Add Farcaster sources
* Pull out profile data from the JSON
* Get non-deleted verifications

warehouse/dbt/models/farcaster_sources.yml

@@ -0,0 +1,10 @@
+sources:
+  - name: farcaster
+    database: opensource-observer
+    schema: farcaster
+    tables:
+      - name: farcaster_verifications
+        identifier: verifications
+      - name: farcaster_profiles
+        identifier: profiles
+

warehouse/dbt/models/staging/farcaster/stg_farcaster__addresses.sql

@@ -0,0 +1,9 @@
+{#
+  Get all verified addresses attached to an FID
+#}
+
+SELECT
+  v.fid AS fid,
+  v.address AS address
+FROM {{ source("farcaster", "farcaster_verifications") }} AS v
+WHERE v.deleted_at IS NULL

warehouse/dbt/models/staging/farcaster/stg_farcaster__profiles.sql

@@ -0,0 +1,13 @@
+{#
+  Get all farcaster profiles from the JSON
+#}
+
+SELECT
+  profiles.fid AS fid,
+  profiles.custody_address AS custody_address,
+  JSON_EXTRACT(profiles.data, "$.username") AS username,
+  JSON_EXTRACT(profiles.data, "$.display") AS display_name,
+  JSON_EXTRACT(profiles.data, "$.pfp") AS profile_picture_url,
+  JSON_EXTRACT(profiles.data, "$.bio") AS bio,
+  JSON_EXTRACT(profiles.data, "$.url") AS url
+FROM {{ source("farcaster", "farcaster_profiles") }} AS profiles