dx: Add additional hooks to pre-commit

.clang-format

@@ -4,3 +4,5 @@ UseTab: Always
 BreakBeforeBraces: Linux
 AllowShortIfStatementsOnASingleLine: false
 IndentCaseLabels: false
+SortIncludes: CaseSensitive
+IncludeBlocks: Preserve

.codespellignore

@@ -0,0 +1,3 @@
+connectd
+crate
+mut

.codespellrc

@@ -0,0 +1,4 @@
+[codespell]
+
+count = true
+ignore-words = .codespellignore

.pre-commit-config.yaml

@@ -11,3 +11,89 @@ repos:
     - id: ruff-format
       args: [ --diff ]
       exclude: "contrib/pyln-grpc-proto/pyln/grpc/(primitives|node)_pb2(|_grpc).py"
+
+- repo: https://github.com/koalaman/shellcheck-precommit
+  rev: v0.10.0
+  hooks:
+    - id: shellcheck
+      args: [ -fgcc ]
+
+- repo: https://github.com/pre-commit/mirrors-clang-format
+  rev: v19.1.4
+  hooks:
+    - id: clang-format
+      description: Runs formatting checks on the c code and and throws errors if suggestions
+        are detected, without modifying the code. Style is defined in `.clang-format`. When
+        encountering formatting-related errors, run `clang-format -i <path-to-file>` to make
+        (destructively) the suggestions and evalute the resulting diff for more context.
+      args: [ --dry-run, -Werror ]
+      entry: clang-format
+      types: [ c ]
+
+- repo: https://github.com/python-jsonschema/check-jsonschema
+  rev: 0.30.0
+  hooks:
+    - id: check-jsonschema
+      name: check doc JSON schemas
+      args: ["--schemafile", "doc/rpc-schema-draft.json"]
+      files: ^doc/schemas/.*\.json$
+      types: [ json ]
+
+    - id: check-metaschema
+      name: check doc JSON metaschemas
+      args: ["--verbose"]
+      files: ^doc/schemas/.*\.json$
+      types: [ json ]
+
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v5.0.0
+  hooks:
+    - id: pretty-format-json
+      args: [ "--indent", "2", "--no-sort-keys" ]
+      files: ^doc/schemas/.*\.json$
+      types: [ json ]
+
+- repo: https://github.com/codespell-project/codespell
+  rev: v2.3.0
+  hooks:
+    - id: codespell
+      description: Checks for common misspellings.
+      exclude: ccan|contrib|tests/fuzz/corpora
+
+- repo: https://github.com/compilerla/conventional-pre-commit
+  rev: v3.6.0
+  hooks:
+    - id: conventional-pre-commit
+      stages: [commit-msg]
+      args:
+        - --scopes=askrene,bkpr,channeld,cli,closingd,cln-grpc,cln-rpc,common,connectd,db,gossipd,hsmd,lightningd,onchaind,openingd,pay,pylightning,pyln-client,pyln-spec,pyln-testing,pytest,splice,tools,wallet,wire,xpay
+        - --verbose
+        - build
+        - chore
+        - ci
+        - docs
+        - feat
+        - fix
+        - style
+        - refactor
+        - perf
+        - test
+
+- repo: local
+  hooks:
+    # Reimplementation of `make check-amount-access` for pygrep.
+    - id: check-amount-access
+      name: Check amount_msat and amount_sat members are not accessed directly
+      description: "Don't access amount_msat and amount_sat members directly without a good reason since it risks overflow."
+      language: pygrep
+      entry: (->|\.)(milli)?satoshis(?!.*\/\*\ Raw:)|(?<!sizeof)\(struct\ amount_(m)?sat\)
+      types: [ c ]
+      exclude: common/amount|.*/test/.*
+
+    # Reimplementation of `make check-discouraged-functions` for pygrep.
+    - id: check-discouraged-functions
+      name: Check for usage of discouraged funtions
+      language: pygrep
+      entry: '[^a-z_/](?:fgets|fputs|gets|scanf|sprintf)\('
+      types: [ c ]
+      exclude: ccan|contrib