fix: convert cf-kv and excalidraw-libraries from submodules to regular files

- Remove stale cloudflare-worker submodule entry from .gitmodules
- Remove .git dirs from cf-kv and excalidraw-libraries so Git tracks them as regular files
- Fixes 'No url found for submodule path cf-kv' CI error

excalidraw-libraries/stats/2021-09/2021-09-29.json

@@ -0,0 +1,69 @@
+{
+  "anumithaapollo12-emojis": 21,
+  "aretecode-decision-flow-control": 67,
+  "aretecode-system-design-template": 119,
+  "arqtangeles-architecture": 11,
+  "bjoernkw-uml-er-library": 58,
+  "braweria-customer-journey-map": 2,
+  "cloud-cloud": 74,
+  "corlaez-hexagonal-architecture": 130,
+  "danimaniarqsoft-scrum-board": 10,
+  "dbssticky-data-viz": 46,
+  "dpalay-common-screen-resolutions": 5,
+  "drwnio-drwnio": 74,
+  "drwnio-storytelling": 20,
+  "dwelle-hearts": 8,
+  "ei-au-computers": 43,
+  "excacomp-mobile-kit": 9,
+  "excacomp-web-kit": 22,
+  "farisology-data-science": 6,
+  "ferminrp-awesome-icons": 87,
+  "ferminrp-awesome-slides": 14,
+  "ferminrp-gantt": 23,
+  "ferminrp-post-it": 27,
+  "franky47-apple-devices-frames": 16,
+  "g-script-android": 10,
+  "g-script-charts": 13,
+  "g-script-forms": 71,
+  "g-script-medias": 5,
+  "h7y-dropdowns": 12,
+  "husainkhambaty-aws-simple-icons": 25,
+  "inwardmovement-information-architecture": 19,
+  "ivanreznikov-yellow-box": 44,
+  "jakubpawlina-graphs": 12,
+  "jdelacruz-veeam_unofficial": 35,
+  "jhoughes-veeam": 12,
+  "jumpingrivers-r": 2,
+  "kaligule-robots": 19,
+  "lipis-polygons": 3,
+  "lipis-stars": 6,
+  "madhusuthanan-b-front-end-tech-and-tools": 3,
+  "madhusuthanan-b-html-css-js-icons": 2,
+  "maeddes-technology-logos": 47,
+  "marcottebear-raspberrypi-zero": 3,
+  "markopolo123-hashistack": 16,
+  "michelcaradec-cloud-design-patterns": 47,
+  "mikhailredis-redis-grafana": 5,
+  "morgemoensch-gadgets": 21,
+  "newbyca-cryptocurrencies": 5,
+  "nikordaris-team-topologies": 3,
+  "novakkkarel-nsx-t-vmware": 4,
+  "ocapraro-bubbles": 27,
+  "pclainchard-it-logos": 19,
+  "pgilfernandez-basic-shapes": 26,
+  "pret-chess-set": 3,
+  "revolunet-raspberrypi3": 7,
+  "rkjc-arduino-boards": 9,
+  "rkjc-schematic-symbols": 10,
+  "shellerbrand-canvases": 8,
+  "shinkim-desktop-resolutions": 4,
+  "shinkim-presentation-templates": 9,
+  "simalexan-wardley-maps-symbols": 15,
+  "slobodan-aws-serverless": 23,
+  "spfr-lo-fi-wireframing-kit": 33,
+  "thijsdev-snowflake": 10,
+  "vasudevatirupathinaidu-random-figure-drawings": 9,
+  "youritjang-azure-cloud-services": 15,
+  "youritjang-software-architecture": 192,
+  "youritjang-stick-figures": 87
+}