Code Cleanup (#869)

- switch to golangci-lint for linting
- switch to gofmpt for formatting
- fix lint and fmt issues that came up from switch to new tools
- upgrade go-sdk to 0.23.2
- support pagination for listing tracked times
- remove `FixPullHeadSha` workaround (upstream fix has been merged for 5+ years at this point)
- standardize on US spelling (previously a mix of US&UK spelling)
- remove some unused code
- reduce some duplication in parsing state and issue type
- reduce some duplication in reading input for secrets and variables
- reduce some duplication with PR Review code
- report error for when yaml parsing fails
- various other misc cleanup

Reviewed-on: https://gitea.com/gitea/tea/pulls/869
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

.golangci.yml

@@ -0,0 +1,45 @@
+version: "2"
+
+formatters:
+  enable:
+    - gofumpt
+
+linters:
+  default: none
+  enable:
+    - govet
+    - revive
+    - misspell
+    - ineffassign
+    - unused
+
+  settings:
+    revive:
+      rules:
+        - name: blank-imports
+        - name: context-as-argument
+        - name: context-keys-type
+        - name: dot-imports
+        - name: error-return
+        - name: error-strings
+        - name: error-naming
+        - name: exported
+        - name: if-return
+        - name: increment-decrement
+        - name: var-declaration
+        - name: range
+        - name: receiver-naming
+        - name: time-naming
+        - name: unexported-return
+        - name: indent-error-flow
+        - name: errorf
+
+    misspell:
+      locale: US
+      ignore-words:
+        - unknwon
+        - destory
+
+issues:
+  max-issues-per-linter: 0
+  max-same-issues: 0