feat: add cJSON and SQLite amalgamation source files under deps/

Add the cJSON library (cJSON.c, cJSON.h) and SQLite amalgamation
(sqlite3.c, sqlite3.h, sqlite3ext.h, shell.c) as vendored dependencies
in the deps/ directory for use by the project build system.

test/crypto/crypto.wren

@@ -0,0 +1,19 @@
+// retoor <retoor@molodetz.nl>
+
+import "crypto" for Crypto, Hash
+
+var bytes = Crypto.randomBytes(16)
+System.print(bytes is List) // expect: true
+System.print(bytes.count) // expect: 16
+
+var md5 = Hash.md5("hello")
+System.print(Hash.toHex(md5)) // expect: 5d41402abc4b2a76b9719d911017c592
+
+var sha1 = Hash.sha1("hello")
+System.print(Hash.toHex(sha1)) // expect: aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d
+
+var sha256 = Hash.sha256("hello")
+System.print(Hash.toHex(sha256)) // expect: 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
+
+var emptyMd5 = Hash.md5("")
+System.print(Hash.toHex(emptyMd5)) // expect: d41d8cd98f00b204e9800998ecf8427e